Smooth Motion SM86 v0.5.2 alpha.1

Smooth Motion SM86 v0.5.2-alpha.1

Prerelease / versión preliminar / 预览版. The app displays 0.5.2 alpha. This does not replace stable v0.5.0, and publishing it does not close the open issues.

Changes to retest

• #11: the Manager only hides on X when tray registration is confirmed; otherwise Retry/Exit remains visible. Exit does not terminate the game. Setup now requests a safe Manager exit when updating an idle installation; it will not force-exit an attached game.
• #12 and #14: Add game/Resolve executable is a real action. The selected .exe persists across Manager restarts, uses its full path, and can be corrected or removed. PLAY offers the executable picker instead of sending users to a dead end; Advanced opens working diagnostics.
• #13: detected, eligible, attached and active are distinct. A running known game can show as detected even when the backend refuses activation. An attached session turned OFF can be turned ON again without restarting the game. Single-flight polling reduces duplicate scans, but the original lag report has not been causally attributed or ruled out.
• #15: critical controls remain in a bottom action area; layout was exercised across English, Simplified Chinese and Spanish, several scale factors and window sizes. The reporter's display configuration still needs retesting.

Validation and limits

• Source suite: 427 tests run in each of normal and optimized (-O) modes in an isolated profile; 20 display-dependent tests were skipped in each restricted run and the rest passed. Separate interactive source and packaged GUI smokes passed.
• The packaged CLI/Manager passed 10 executable smokes, including tray, layout, Add/PLAY persistence across processes, X/Exit lifecycle and the installer's shutdown request. The shutdown smoke refused while a controlled game state was attached, then exited when idle.
• The exact Setup bytes below passed clean install and uninstall in one disposable Windows Sandbox, and upgrade from v0.5.0 in a second. Settings hashes matched across upgrade; a manual library entry survived. A hidden-in-tray Manager also exited safely during a silent reinstall of the exact Setup.
• The tray icon registered with Explorer and the X/Exit behavior passed programmatic checks. The attempted overflow screenshot opened the keyboard-language menu instead, so visual identification of the icon is not confirmed.
• The reporters' systems and game/store combinations have not confirmed these fixes. Cyberpunk's original lag still needs paired ON/OFF measurements; real Game Pass/Hydra and other unsupported-store launch paths remain to be retested where available. Do not infer broad compatibility from these smokes.
• Driver authorization is unchanged: 616.64 on RTX 3090 is the live-validated golden configuration; the exact recognized 591.86 build remains static/experimental. 616.92 is not authorized by this release: activation is refused and nothing is injected. Installing the Manager on an unknown driver does not grant backend support.

Please retest the relevant issue with this build and attach a privacy-reviewed Support Bundle. Do not close an issue solely because this prerelease exists.

Downloads and integrity

The release assets are SmoothMotionSM86-Setup.exe and SmoothMotionSM86-0.5.2-win64.zip. Their SHA-256 hashes are in SHA256SUMS-0.5.2-alpha.1.txt. These are distribution binaries and documentation; the private engine source, research history and NVIDIA binaries are not published here. The installer is unsigned, so Windows may show a reputation warning; verify the hash before running it.

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Assets rebuilt on 2026-09-24 (release hygiene only: same features, same behavior and the same validated driver adaptation). The checksums in SHA256SUMS were updated.

Archivos recompilados el 2026-09-24 (solo higiene de publicacion: mismas funciones, mismo comportamiento y la misma adaptacion validada). Se actualizaron los checksums de SHA256SUMS.

2026-09-24 重新构建了发布文件（仅为发布整理：功能、行为和已验证的驱动适配均不变）。SHA256SUMS 中的校验和已更新。

Smooth Motion SM86 for Linux v0.1.0 experimental (feedback wanted)

English | Español abajo | 中文在下方

Smooth Motion SM86 for Linux — v0.1.0 experimental (feedback wanted)

Experimental prerelease. This packaged installer has not yet been run on real Linux hardware by the
project. The Linux line itself was validated in research on RTX 3080 · Ubuntu 26.04 · Wayland ·
NVIDIA 595.91.07 with Hades (DirectX through Proton). We need testers to confirm the installer end to end.

Requirements

• Linux x86-64, an RTX 30 series GPU (Ampere SM86), NVIDIA driver 595.91.07 (the only recognized build).
  Other drivers install fine but Smooth Motion stays off (fail-closed); nothing is modified.
• Steam + Proton Experimental for Windows games.

Install

sha256sum -c SHA256SUMS-linux-v0.1.0-experimental.txt
sh SmoothMotionSM86-Linux-0.1.0-linux-experimental-x86_64.run
smooth-motion-sm86-linux status
smooth-motion-sm86-linux launch --appid 1145360 --prefer x64 --via proton --quiet   # example: Hades

User-local, no root. It bundles its own Python runtime. System NVIDIA libraries are never modified: a private
copy is adapted and activated per process. Uninstall: smooth-motion-sm86-linux-uninstall.

Please report

Open an issue with the linux label: distro, desktop (Wayland/X11), GPU, driver, the output of
smooth-motion-sm86-linux status, the game, and whether FPS doubled (Steam overlay counter). Failures are as useful as successes.

Known limitations

• Smooth Motion adds latency; it helps most when the base FPS is low.
• Do not use MangoHud together with it (black image). Use the Steam FPS counter.
• Cyberpunk 2077 (VKD3D) is not validated: strong input lag.

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Español: Smooth Motion SM86 para Linux, v0.1.0 experimental (necesitamos tu feedback)

Prerelease experimental. Este instalador empaquetado todavía no se probó en hardware Linux real por el
proyecto. La línea de Linux se validó en investigación con RTX 3080 · Ubuntu 26.04 · Wayland · NVIDIA 595.91.07
y Hades (DirectX mediante Proton). Necesitamos testers que confirmen el instalador de punta a punta.

• Requisitos: Linux x86-64, RTX serie 30 (Ampere SM86), driver NVIDIA 595.91.07 (el único reconocido). Con otros drivers
  se instala igual, pero Smooth Motion queda apagado y no se modifica nada. Steam + Proton Experimental.
• Instalar: sh SmoothMotionSM86-Linux-0.1.0-linux-experimental-x86_64.run, después smooth-motion-sm86-linux status.
  Sin root; trae su propio Python; no toca las bibliotecas NVIDIA del sistema. Desinstalar: smooth-motion-sm86-linux-uninstall.
• Reportá con la etiqueta linux: distro, escritorio, GPU, driver, salida de status, juego y si se duplicaron los FPS.
  Los fallos sirven tanto como los éxitos.
• Limitaciones: agrega latencia; no usar con MangoHud (imagen negra); Cyberpunk (VKD3D) no validado.

---

中文：Smooth Motion SM86 Linux 版 v0.1.0 实验版（需要反馈）

实验性预发布。本打包安装程序尚未由项目在真实 Linux 硬件上运行过。 Linux 路线已在研究中于 RTX 3080 · Ubuntu 26.04 ·
Wayland · NVIDIA 595.91.07 上用 Hades（通过 Proton 运行的 DirectX）验证。我们需要测试者完整验证安装程序。

• 要求： Linux x86-64、RTX 30 系列（Ampere SM86）、NVIDIA 595.91.07 驱动（唯一识别的版本）。其他驱动可以安装，但 Smooth Motion 保持关闭，不会修改任何内容。需要 Steam + Proton Experimental。
• 安装： sh SmoothMotionSM86-Linux-0.1.0-linux-experimental-x86_64.run，然后运行 smooth-motion-sm86-linux status。无需 root；自带 Python；不修改系统 NVIDIA 库。卸载：smooth-motion-sm86-linux-uninstall。
• 请反馈（使用 linux 标签）：发行版、桌面、GPU、驱动、status 输出、游戏以及帧率是否翻倍。失败报告同样有用。
• 已知限制： 会增加延迟；不要与 MangoHud 同时使用（黑屏）；Cyberpunk（VKD3D）未验证。

Smooth Motion SM86 v0.5.0

English | 简体中文 | Español

Release notes — Smooth Motion SM86 0.5.0

Stable release. Driver 591.86 support for the exact recognized NvPresent build is
statically validated / experimental and not yet live-validated by the project;
616.64 remains the live-validated golden configuration.

What's new in 0.5.0

• Manager startup crash fixed (issue #3). The ttk.Combobox startup crash is fixed;
  the Manager opens on affected systems and stays fail-closed.
• Chinese installer dynamic values fixed (issue #5). The compatibility data is now
  UTF-8, so the detected GPU, NVIDIA driver, architecture and status are no longer blank
  in the Simplified Chinese installer or the Technical details dialog.
• Close / tray behaviour clarified. The title-bar X minimizes to the system tray
  and keeps the app running by design (background monitoring continues); use the tray menu
  Exit to quit completely. A one-time notice now says so and the docs explain it.
• Installation is no longer tied to one exact driver version. Setup and the Manager
  run on unknown/unvalidated drivers; only backend activation is refused (fail-closed).
  Your installed NVIDIA driver files are never modified.
• Experimental compatibility for the exact recognized 591.86 NvPresent build. The
  Manager identifies the actual NvPresent binary by SHA-256 rather than trusting the
  driver version string. If your installed build matches the statically validated one, it
  reports "Static validation passed" and offers experimental activation (with a
  one-time acknowledgement). This is not a claim that 591.86 works — live confirmation is
  still needed.
• 616.64 / RTX 3090 remains the live-validated golden configuration and is unchanged.
• Support bundle includes the NvPresent SHA-256, manifest match, compatibility tier and
  object census (hashes and counts only; never NVIDIA binaries).
• Broader structural multi-driver generalization continues for v0.5.1.

What's new in 0.5.0-rc.1 (prerelease, historical)

• Manager startup crash fixed. The ttk.Combobox startup crash reported in issue #3
  is fixed; the Manager opens on affected systems and stays fail-closed.
• Chinese installer fix (issue #5). The detected GPU, NVIDIA driver, architecture and
  compatibility values no longer render blank in the Simplified Chinese installer and the
  Technical details dialog. Root cause: the compatibility file was written as UTF-16, which
  the Inno Setup reader does not support; it is now UTF-8.
• Installation is no longer tied to one exact driver version. Setup installs and the
  Manager opens on unknown/unvalidated drivers; only backend activation is refused
  (fail-closed). Your installed NVIDIA driver files are never modified.
• Experimental compatibility for the exact 591.86 NvPresent build. The Manager now
  identifies the actual NvPresent binary by SHA-256 rather than trusting the driver version
  string. If your installed build matches the statically validated one, it reports
  "Static validation passed" and offers experimental activation (with a one-time
  acknowledgement). This is not a claim that 591.86 works — it must be confirmed in a live
  game by the community.
• Support bundle now includes the NvPresent SHA-256, manifest match, compatibility tier,
  object census and transform/runtime state (hashes and counts only; never NVIDIA binaries).
• 616.64 / RTX 3090 remains the live-validated golden configuration and is unchanged.
• Broader multi-driver generalization (structural analysis of more driver families) is
  in progress for v0.5.1.

Packaging note: in the v0.4.3 release the portable runtime asset remains
SmoothMotionSM86-0.4.2-win64.zip; v0.4.3 is an installer/presentation update
over the unchanged 0.4.2 engine. The asset name is intentional, not stale.

Evidence tiers (read this first)

The project keeps these distinct and never merges them:

• D3D11 — instrumentally validated live path. Live ON/OFF/ON was validated on
  the golden configuration with runtime instrumentation.
• D3D12 — observed working in real games, active-engine instrumentation
  inconclusive. Smooth Motion is observed working in real D3D12 games, but current
  dynamic-engine runtime instrumentation is inconclusive because no target
  module-load traffic was observed in the latest active-engine validation window.
  This is not classified as a regression.
• Vulkan — experimental. No in-game toggle.

Canonical source: VALIDATION.md.

What's new in 0.4.6

• Reliability hardening. The Manager starts and fails closed on unsupported or unusual
  systems (unknown/unsupported drivers, hybrid and multi-GPU setups, malformed settings),
  showing a clear compatibility status instead of an error.
• Single-source compatibility. Status and backend availability derive from one engine; an
  unsupported or unknown environment cannot activate the backend.
• Support bundle. "Create Support Package" produces a privacy-reviewed local ZIP (no
  telemetry) to attach to an issue.
• Packaging validation. Source, onedir, portable and installed builds are tested independently.

What's new in 0.4.5

• Manager startup hotfix. Fixed a GUI startup crash (unknown option "-command") that
  could stop the Manager from opening at all.
• Fail-closed on any system. The Manager now starts and stays usable even when Smooth
  Motion cannot be enabled (unsupported GPU or driver, unusual/multi-GPU systems): it shows
  the detected environment and a clear compatibility status instead of an error.
• Startup safety net. Startup logging and a friendly crash dialog (with an error ID and
  a local log) replace raw tracebacks.

What's new in 0.4.4

• Full localization: English, Simplified Chinese (简体中文) and Spanish (Español).
• Manager / launcher — a language selector in the header; switching applies immediately
  and the choice is saved. First run follows the Windows UI language.
• Installer — English / 简体中文 / Español, chosen from the Windows UI language or the
  language dialog; the chosen language is carried into the Manager on first run.
• System tray, Windows notifications and the CLI use the selected language
  (machine-readable JSON stays language-neutral).
• Public documentation — README, install guide, troubleshooting, support, compatibility,
  FAQ, roadmap, validation, privacy, security and the EULA are available in all three languages.

What's new in 0.4.3

• New System Compatibility page in the installer. Before anything is installed,
  Setup now shows the detected GPU, NVIDIA driver, architecture and a
  plain-language compatibility status:
  • Compatible (validated configuration),
  • Experimental (architecture-compatible but not physically validated),
  • Driver not yet supported (your driver version isn't validated yet — nothing is
    modified),
  • Multiple GPUs (automatic target selection isn't supported in this preview),
  • Not supported (outside RTX 30 / Ampere SM86).
• A small Technical details button shows GPU model, architecture, compute
  capability and driver version (no internal data).
• Silent installs (/VERYSILENT) are unaffected and never wait on the page.

Product engine unchanged: the bundled application is the same validated 0.4.2 build.
This release is an installer/UX improvement.

What's new in 0.4.2

• System tray controls: status, current game, one-click Toggle Smooth Motion,
  Open Manager, Diagnostics, Exit. Close the Manager to the tray and keep playing.
• Native Windows notifications: when you toggle live (tray, hotkey or Manager),
  a normal Windows notification shows Smooth Motion ON / Smooth Motion OFF with
  the game name. Failure cases notify too (no active game, live unavailable,
  state not verified).
• Tray, Manager, hotkey and CLI remain one backend (runtime.toggle); every
  surface reads the same verified state.
• Live toggle: D3D11 instrumentally validated; D3D12 observed working, with
  active-engine instrumentation currently inconclusive (see Evidence tiers).
  Vulkan sessions show "live toggle not available" (never faked).

What's new in 0.4.1

• Live ON/OFF control for a running game. When a supported game is injected and
  running, the Manager shows a NOW PLAYING card with a one-click ON/OFF button
  that changes the running game immediately — no terminal, no restart. Ideal for a
  same-scene A/B/A comparison.
• Optional global hotkey (default Ctrl + Alt + S, configurable in settings)
  to toggle live without leaving the game.
• Live control uses the same validated runtime engine as the CLI (on/off) and
  verifies the change with a read-back before reporting success.
• Live toggle: D3D11 instrumentally validated; D3D12 observed working
  (active-engine instrumentation currently inconclusive). It is not enabled for
  Vulkan sessions (shown as "not available for this session").
• Distribution-only packaging, manager, game library and driver-change detection
  as in 0.4.0.

What this is

An unsigned research-preview tool that enables NVIDIA Smooth Motion on Ampere
SM86 GPUs (RTX 30-series), validated primarily on an RTX 3090 with driver 616.64.
It derives what it needs from your own installed NVIDIA driver; no NVIDIA binary
is redistributed and the DriverStore is never modified.

What's new in 0.4.0

• Smooth Motion Manager with a one-click master switch and a per-game switch.
• Game library scanning (Steam, Epic, Game Pass) — pick a game and press Play.
• Automatic system detection with consumer-language compatibility status.
  -...

v0.5.0-rc.1 (experimental compatibility preview)

English | 简体中文 | Español

Release notes — Smooth Motion SM86 0.5.0-rc.1 (experimental compatibility preview)

Prerelease. This is a test build. Driver 591.86 support is statically validated,
not live-validated by the project; please test it in a game and report back.

What's new in 0.5.0-rc.1

• Manager startup crash fixed. The ttk.Combobox startup crash reported in issue #3
  is fixed; the Manager opens on affected systems and stays fail-closed.
• Chinese installer fix (issue #5). The detected GPU, NVIDIA driver, architecture and
  compatibility values no longer render blank in the Simplified Chinese installer and the
  Technical details dialog. Root cause: the compatibility file was written as UTF-16, which
  the Inno Setup reader does not support; it is now UTF-8.
• Installation is no longer tied to one exact driver version. Setup installs and the
  Manager opens on unknown/unvalidated drivers; only backend activation is refused
  (fail-closed). Your installed NVIDIA driver files are never modified.
• Experimental compatibility for the exact 591.86 NvPresent build. The Manager now
  identifies the actual NvPresent binary by SHA-256 rather than trusting the driver version
  string. If your installed build matches the statically validated one, it reports
  "Static validation passed" and offers experimental activation (with a one-time
  acknowledgement). This is not a claim that 591.86 works — it must be confirmed in a live
  game by the community.
• Support bundle now includes the NvPresent SHA-256, manifest match, compatibility tier,
  object census and transform/runtime state (hashes and counts only; never NVIDIA binaries).
• 616.64 / RTX 3090 remains the live-validated golden configuration and is unchanged.
• Broader multi-driver generalization (structural analysis of more driver families) is
  in progress for v0.5.1.

Packaging note: in the v0.4.3 release the portable runtime asset remains
SmoothMotionSM86-0.4.2-win64.zip; v0.4.3 is an installer/presentation update
over the unchanged 0.4.2 engine. The asset name is intentional, not stale.

Evidence tiers (read this first)

The project keeps these distinct and never merges them:

• D3D11 — instrumentally validated live path. Live ON/OFF/ON was validated on
  the golden configuration with runtime instrumentation.
• D3D12 — observed working in real games, active-engine instrumentation
  inconclusive. Smooth Motion is observed working in real D3D12 games, but current
  dynamic-engine runtime instrumentation is inconclusive because no target
  module-load traffic was observed in the latest active-engine validation window.
  This is not classified as a regression.
• Vulkan — experimental. No in-game toggle.

Canonical source: VALIDATION.md.

What's new in 0.4.6

• Reliability hardening. The Manager starts and fails closed on unsupported or unusual
  systems (unknown/unsupported drivers, hybrid and multi-GPU setups, malformed settings),
  showing a clear compatibility status instead of an error.
• Single-source compatibility. Status and backend availability derive from one engine; an
  unsupported or unknown environment cannot activate the backend.
• Support bundle. "Create Support Package" produces a privacy-reviewed local ZIP (no
  telemetry) to attach to an issue.
• Packaging validation. Source, onedir, portable and installed builds are tested independently.

What's new in 0.4.5

• Manager startup hotfix. Fixed a GUI startup crash (unknown option "-command") that
  could stop the Manager from opening at all.
• Fail-closed on any system. The Manager now starts and stays usable even when Smooth
  Motion cannot be enabled (unsupported GPU or driver, unusual/multi-GPU systems): it shows
  the detected environment and a clear compatibility status instead of an error.
• Startup safety net. Startup logging and a friendly crash dialog (with an error ID and
  a local log) replace raw tracebacks.

What's new in 0.4.4

• Full localization: English, Simplified Chinese (简体中文) and Spanish (Español).
• Manager / launcher — a language selector in the header; switching applies immediately
  and the choice is saved. First run follows the Windows UI language.
• Installer — English / 简体中文 / Español, chosen from the Windows UI language or the
  language dialog; the chosen language is carried into the Manager on first run.
• System tray, Windows notifications and the CLI use the selected language
  (machine-readable JSON stays language-neutral).
• Public documentation — README, install guide, troubleshooting, support, compatibility,
  FAQ, roadmap, validation, privacy, security and the EULA are available in all three languages.

What's new in 0.4.3

• New System Compatibility page in the installer. Before anything is installed,
  Setup now shows the detected GPU, NVIDIA driver, architecture and a
  plain-language compatibility status:
  • Compatible (validated configuration),
  • Experimental (architecture-compatible but not physically validated),
  • Driver not yet supported (your driver version isn't validated yet — nothing is
    modified),
  • Multiple GPUs (automatic target selection isn't supported in this preview),
  • Not supported (outside RTX 30 / Ampere SM86).
• A small Technical details button shows GPU model, architecture, compute
  capability and driver version (no internal data).
• Silent installs (/VERYSILENT) are unaffected and never wait on the page.

Product engine unchanged: the bundled application is the same validated 0.4.2 build.
This release is an installer/UX improvement.

What's new in 0.4.2

• System tray controls: status, current game, one-click Toggle Smooth Motion,
  Open Manager, Diagnostics, Exit. Close the Manager to the tray and keep playing.
• Native Windows notifications: when you toggle live (tray, hotkey or Manager),
  a normal Windows notification shows Smooth Motion ON / Smooth Motion OFF with
  the game name. Failure cases notify too (no active game, live unavailable,
  state not verified).
• Tray, Manager, hotkey and CLI remain one backend (runtime.toggle); every
  surface reads the same verified state.
• Live toggle: D3D11 instrumentally validated; D3D12 observed working, with
  active-engine instrumentation currently inconclusive (see Evidence tiers).
  Vulkan sessions show "live toggle not available" (never faked).

What's new in 0.4.1

• Live ON/OFF control for a running game. When a supported game is injected and
  running, the Manager shows a NOW PLAYING card with a one-click ON/OFF button
  that changes the running game immediately — no terminal, no restart. Ideal for a
  same-scene A/B/A comparison.
• Optional global hotkey (default Ctrl + Alt + S, configurable in settings)
  to toggle live without leaving the game.
• Live control uses the same validated runtime engine as the CLI (on/off) and
  verifies the change with a read-back before reporting success.
• Live toggle: D3D11 instrumentally validated; D3D12 observed working
  (active-engine instrumentation currently inconclusive). It is not enabled for
  Vulkan sessions (shown as "not available for this session").
• Distribution-only packaging, manager, game library and driver-change detection
  as in 0.4.0.

What this is

An unsigned research-preview tool that enables NVIDIA Smooth Motion on Ampere
SM86 GPUs (RTX 30-series), validated primarily on an RTX 3090 with driver 616.64.
It derives what it needs from your own installed NVIDIA driver; no NVIDIA binary
is redistributed and the DriverStore is never modified.

What's new in 0.4.0

• Smooth Motion Manager with a one-click master switch and a per-game switch.
• Game library scanning (Steam, Epic, Game Pass) — pick a game and press Play.
• Automatic system detection with consumer-language compatibility status.
• Driver-change detection: an old profile is never applied to a changed driver.
• Distribution-only packaging: the release profile data is embedded in the
  compiled product; no readable recipe file ships.
• Proprietary end-user license (source not published).

Validated environment

• NVIDIA RTX 3090 (SM86), single active adapter
• Driver 616.64 (32.0.16.1664), Windows 10/11 x64

Status

• D3D11: selected titles, direct EXE launch — instrumentally validated (live
  ON/OFF/ON on the golden configuration).
• D3D12: selected titles — observed working; dynamic-engine runtime
  instrumentation currently inconclusive (not a regression).
• Architecture compatible (experimental): other single-GPU RTX 30 / SM86 boards
  with the same driver — same architecture, not physically validated.
• Experimental: Windows Vulkan.
• Not supported: other driver versions, 32-bit titles, anti-cheat titles.
• Multi-GPU: the current Consumer Preview expects a single CUDA/NVIDIA target
  device. Explicit rendering-GPU selection is planned for a later release (a
  manager device-selection limitation, not a hardware incompatibility).

Known limitations

• Unsigned build (UNSIGNED_RESEARCH_PREVIEW).
• Storefront titles that relaunch into a new process (Game Pass / some Epic) are
  not reliably followed yet.
• No in-game toggle on the Vulkan path.
• Higher base FPS strongly recommended; very low base FPS increases artifacts and
  perceived latency.

---

Assets rebuilt on 2026-09-24 (release hygiene only: same features, same behavior and the same validated driver adaptation). The checksums in SHA256SUMS were updated.

Archivos recompilados el 2026-09-24 (solo higiene de publicacion: mismas funcione...

Smooth Motion SM86 v0.4.4 - Localization

Full localization: English, Simplified Chinese (简体中文) and Spanish (Español).

• Manager / launcher — a language selector in the header (Language / 语言 / Idioma); switching applies immediately and the choice is saved. First run follows the Windows UI language.
• Installer — English / 简体中文 / Español, chosen from your Windows UI language or the language dialog; the chosen language is carried into the Manager on first run.
• System tray, Windows notifications and the CLI use the selected language (machine-readable JSON stays language-neutral).
• Public documentation — README, install guide, troubleshooting, support, compatibility, FAQ, roadmap, validation, privacy, security and the EULA are available in all three languages.

Compatibility (unchanged)

• Golden configuration: RTX 3090 + driver 616.64, single active adapter.
• D3D11 live ON/OFF/ON path: instrumentally validated.
• D3D12: observed working in real games; active dynamic-engine runtime instrumentation currently inconclusive (not a regression).
• Vulkan: experimental (no in-game toggle).
• Other single-GPU SM86 RTX 30 boards: experimental where the exact driver/profile is accepted. Other drivers/GPUs are refused (fail closed).
• No NVIDIA binary redistribution; DriverStore untouched; unsigned build (verify SHA-256).

See VALIDATION.md for the evidence tiers.

---

Assets rebuilt on 2026-09-24 (release hygiene only: same features, same behavior and the same validated driver adaptation). The checksums in SHA256SUMS were updated.

Archivos recompilados el 2026-09-24 (solo higiene de publicacion: mismas funciones, mismo comportamiento y la misma adaptacion validada). Se actualizaron los checksums de SHA256SUMS.

2026-09-24 重新构建了发布文件（仅为发布整理：功能、行为和已验证的驱动适配均不变）。SHA256SUMS 中的校验和已更新。

Smooth Motion SM86 v0.4.3 - Installer UX

Release notes — Smooth Motion SM86 0.4.3 (installer UX update)

Packaging note: in the v0.4.3 release the portable runtime asset remains
SmoothMotionSM86-0.4.2-win64.zip; v0.4.3 is an installer/presentation update
over the unchanged 0.4.2 engine. The asset name is intentional, not stale.

Evidence tiers (read this first)

The project keeps these distinct and never merges them:

• D3D11 — instrumentally validated live path. Live ON/OFF/ON was validated on
  the golden configuration with runtime instrumentation.
• D3D12 — observed working in real games, active-engine instrumentation
  inconclusive. Smooth Motion is observed working in real D3D12 games, but current
  dynamic-engine runtime instrumentation is inconclusive because no target
  module-load traffic was observed in the latest active-engine validation window.
  This is not classified as a regression.
• Vulkan — experimental. No in-game toggle.

Canonical source: VALIDATION.md.

What's new in 0.4.3

• New System Compatibility page in the installer. Before anything is installed,
  Setup now shows the detected GPU, NVIDIA driver, architecture and a
  plain-language compatibility status:
  • Compatible (validated configuration),
  • Experimental (architecture-compatible but not physically validated),
  • Driver not yet supported (your driver version isn't validated yet — nothing is
    modified),
  • Multiple GPUs (automatic target selection isn't supported in this preview),
  • Not supported (outside RTX 30 / Ampere SM86).
• A small Technical details button shows GPU model, architecture, compute
  capability and driver version (no internal data).
• Silent installs (/VERYSILENT) are unaffected and never wait on the page.

Product engine unchanged: the bundled application is the same validated 0.4.2 build.
This release is an installer/UX improvement.

What's new in 0.4.2

• System tray controls: status, current game, one-click Toggle Smooth Motion,
  Open Manager, Diagnostics, Exit. Close the Manager to the tray and keep playing.
• Native Windows notifications: when you toggle live (tray, hotkey or Manager),
  a normal Windows notification shows Smooth Motion ON / Smooth Motion OFF with
  the game name. Failure cases notify too (no active game, live unavailable,
  state not verified).
• Tray, Manager, hotkey and CLI remain one backend (runtime.toggle); every
  surface reads the same verified state.
• Live toggle: D3D11 instrumentally validated; D3D12 observed working, with
  active-engine instrumentation currently inconclusive (see Evidence tiers).
  Vulkan sessions show "live toggle not available" (never faked).

What's new in 0.4.1

• Live ON/OFF control for a running game. When a supported game is injected and
  running, the Manager shows a NOW PLAYING card with a one-click ON/OFF button
  that changes the running game immediately — no terminal, no restart. Ideal for a
  same-scene A/B/A comparison.
• Optional global hotkey (default Ctrl + Alt + S, configurable in settings)
  to toggle live without leaving the game.
• Live control uses the same validated runtime engine as the CLI (on/off) and
  verifies the change with a read-back before reporting success.
• Live toggle: D3D11 instrumentally validated; D3D12 observed working
  (active-engine instrumentation currently inconclusive). It is not enabled for
  Vulkan sessions (shown as "not available for this session").
• Distribution-only packaging, manager, game library and driver-change detection
  as in 0.4.0.

What this is

An unsigned research-preview tool that enables NVIDIA Smooth Motion on Ampere
SM86 GPUs (RTX 30-series), validated primarily on an RTX 3090 with driver 616.64.
It derives what it needs from your own installed NVIDIA driver; no NVIDIA binary
is redistributed and the DriverStore is never modified.

What's new in 0.4.0

• Smooth Motion Manager with a one-click master switch and a per-game switch.
• Game library scanning (Steam, Epic, Game Pass) — pick a game and press Play.
• Automatic system detection with consumer-language compatibility status.
• Driver-change detection: an old profile is never applied to a changed driver.
• Distribution-only packaging: the release profile data is embedded in the
  compiled product; no readable recipe file ships.
• Proprietary end-user license (source not published).

Validated environment

• NVIDIA RTX 3090 (SM86), single active adapter
• Driver 616.64 (32.0.16.1664), Windows 10/11 x64

Status

• D3D11: selected titles, direct EXE launch — instrumentally validated (live
  ON/OFF/ON on the golden configuration).
• D3D12: selected titles — observed working; dynamic-engine runtime
  instrumentation currently inconclusive (not a regression).
• Architecture compatible (experimental): other single-GPU RTX 30 / SM86 boards
  with the same driver — same architecture, not physically validated.
• Experimental: Windows Vulkan.
• Not supported: other driver versions, 32-bit titles, anti-cheat titles.
• Multi-GPU: the current Consumer Preview expects a single CUDA/NVIDIA target
  device. Explicit rendering-GPU selection is planned for a later release (a
  manager device-selection limitation, not a hardware incompatibility).

Known limitations

• Unsigned build (UNSIGNED_RESEARCH_PREVIEW).
• Storefront titles that relaunch into a new process (Game Pass / some Epic) are
  not reliably followed yet.
• No in-game toggle on the Vulkan path.
• Higher base FPS strongly recommended; very low base FPS increases artifacts and
  perceived latency.

---

Assets rebuilt on 2026-09-24 (release hygiene only: same features, same behavior and the same validated driver adaptation). The checksums in SHA256SUMS were updated.

Archivos recompilados el 2026-09-24 (solo higiene de publicacion: mismas funciones, mismo comportamiento y la misma adaptacion validada). Se actualizaron los checksums de SHA256SUMS.

2026-09-24 重新构建了发布文件（仅为发布整理：功能、行为和已验证的驱动适配均不变）。SHA256SUMS 中的校验和已更新。

Smooth Motion SM86 v0.4.2 - Consumer Preview

Evidence-tier clarification (added after release): D3D11 is the
instrumentally validated live path; D3D12 is observed working in real games
with active-engine runtime instrumentation currently inconclusive. Some
wording below predates this clarification. See VALIDATION.md.

Release notes — Smooth Motion SM86 0.4.2 (consumer preview)

What's new in 0.4.2

• System tray controls: status, current game, one-click Toggle Smooth Motion,
  Open Manager, Diagnostics, Exit. Close the Manager to the tray and keep playing.
• Native Windows notifications: when you toggle live (tray, hotkey or Manager),
  a normal Windows notification shows Smooth Motion ON / Smooth Motion OFF with
  the game name. Failure cases notify too (no active game, live unavailable,
  state not verified).
• Tray, Manager, hotkey and CLI remain one backend (runtime.toggle); every
  surface reads the same verified state.
• Live toggle remains D3D11/D3D12 validated; Vulkan sessions show "live toggle not
  available" (never faked).

What's new in 0.4.1

• Live ON/OFF control for a running game. When a supported game is injected and
  running, the Manager shows a NOW PLAYING card with a one-click ON/OFF button
  that changes the running game immediately — no terminal, no restart. Ideal for a
  same-scene A/B/A comparison.
• Optional global hotkey (default Ctrl + Alt + S, configurable in settings)
  to toggle live without leaving the game.
• Live control uses the same validated runtime engine as the CLI (on/off) and
  verifies the change with a read-back before reporting success.
• Live toggle is validated for D3D11 and D3D12. It is not enabled for Vulkan
  sessions (shown as "not available for this session").
• Distribution-only packaging, manager, game library and driver-change detection
  as in 0.4.0.

What this is

An unsigned research-preview tool that enables NVIDIA Smooth Motion on Ampere
SM86 GPUs (RTX 30-series), validated primarily on an RTX 3090 with driver 616.64.
It derives what it needs from your own installed NVIDIA driver; no NVIDIA binary
is redistributed and the DriverStore is never modified.

What's new in 0.4.0

• Smooth Motion Manager with a one-click master switch and a per-game switch.
• Game library scanning (Steam, Epic, Game Pass) — pick a game and press Play.
• Automatic system detection with consumer-language compatibility status.
• Driver-change detection: an old profile is never applied to a changed driver.
• Distribution-only packaging: the release profile data is embedded in the
  compiled product; no readable recipe file ships.
• Proprietary end-user license (source not published).

Validated environment

• NVIDIA RTX 3090 (SM86), single active adapter
• Driver 616.64 (32.0.16.1664), Windows 10/11 x64

Status

• Validated: selected D3D11/D3D12 titles (direct EXE launch).
• Architecture compatible (experimental): other single-GPU RTX 30 / SM86 boards
  with the same driver — same architecture, not physically validated.
• Experimental: Windows Vulkan.
• Not supported: other driver versions, 32-bit titles, anti-cheat titles.
• Multi-GPU: the current Consumer Preview expects a single CUDA/NVIDIA target
  device. Explicit rendering-GPU selection is planned for a later release (a
  manager device-selection limitation, not a hardware incompatibility).

Known limitations

• Unsigned build (UNSIGNED_RESEARCH_PREVIEW).
• Storefront titles that relaunch into a new process (Game Pass / some Epic) are
  not reliably followed yet.
• No in-game toggle on the Vulkan path.
• Higher base FPS strongly recommended; very low base FPS increases artifacts and
  perceived latency.

---

Assets rebuilt on 2026-09-24 (release hygiene only: same features, same behavior and the same validated driver adaptation). The checksums in SHA256SUMS were updated.

Archivos recompilados el 2026-09-24 (solo higiene de publicacion: mismas funciones, mismo comportamiento y la misma adaptacion validada). Se actualizaron los checksums de SHA256SUMS.

2026-09-24 重新构建了发布文件（仅为发布整理：功能、行为和已验证的驱动适配均不变）。SHA256SUMS 中的校验和已更新。

Smooth Motion SM86 v0.4.1 - Consumer Preview

Evidence-tier clarification (added after release): D3D11 is the
instrumentally validated live path; D3D12 is observed working in real games
with active-engine runtime instrumentation currently inconclusive. Some
wording below predates this clarification. See VALIDATION.md.

Release notes — Smooth Motion SM86 0.4.1 (consumer preview)

What's new in 0.4.1

• Live ON/OFF control for a running game. When a supported game is injected and
  running, the Manager shows a NOW PLAYING card with a one-click ON/OFF button
  that changes the running game immediately — no terminal, no restart. Ideal for a
  same-scene A/B/A comparison.
• Optional global hotkey (default Ctrl + Alt + S, configurable in settings)
  to toggle live without leaving the game.
• Live control uses the same validated runtime engine as the CLI (on/off) and
  verifies the change with a read-back before reporting success.
• Live toggle is validated for D3D11 and D3D12. It is not enabled for Vulkan
  sessions (shown as "not available for this session").
• Distribution-only packaging, manager, game library and driver-change detection
  as in 0.4.0.

What this is

An unsigned research-preview tool that enables NVIDIA Smooth Motion on Ampere
SM86 GPUs (RTX 30-series), validated primarily on an RTX 3090 with driver 616.64.
It derives what it needs from your own installed NVIDIA driver; no NVIDIA binary
is redistributed and the DriverStore is never modified.

What's new in 0.4.0

• Smooth Motion Manager with a one-click master switch and a per-game switch.
• Game library scanning (Steam, Epic, Game Pass) — pick a game and press Play.
• Automatic system detection with consumer-language compatibility status.
• Driver-change detection: an old profile is never applied to a changed driver.
• Distribution-only packaging: the release profile data is embedded in the
  compiled product; no readable recipe file ships.
• Proprietary end-user license (source not published).

Validated environment

• NVIDIA RTX 3090 (SM86), single active adapter
• Driver 616.64 (32.0.16.1664), Windows 10/11 x64

Status

• Validated: selected D3D11/D3D12 titles (direct EXE launch).
• Architecture compatible (experimental): other single-GPU RTX 30 / SM86 boards
  with the same driver — same architecture, not physically validated.
• Experimental: Windows Vulkan.
• Not supported: other driver versions, 32-bit titles, anti-cheat titles.
• Multi-GPU: the current Consumer Preview expects a single CUDA/NVIDIA target
  device. Explicit rendering-GPU selection is planned for a later release (a
  manager device-selection limitation, not a hardware incompatibility).

Known limitations

• Unsigned build (UNSIGNED_RESEARCH_PREVIEW).
• Storefront titles that relaunch into a new process (Game Pass / some Epic) are
  not reliably followed yet.
• No in-game toggle on the Vulkan path.
• Higher base FPS strongly recommended; very low base FPS increases artifacts and
  perceived latency.

---

Assets rebuilt on 2026-09-24 (release hygiene only: same features, same behavior and the same validated driver adaptation). The checksums in SHA256SUMS were updated.

Archivos recompilados el 2026-09-24 (solo higiene de publicacion: mismas funciones, mismo comportamiento y la misma adaptacion validada). Se actualizaron los checksums de SHA256SUMS.

2026-09-24 重新构建了发布文件（仅为发布整理：功能、行为和已验证的驱动适配均不变）。SHA256SUMS 中的校验和已更新。

Smooth Motion SM86 v0.4.0 - Consumer Preview

Evidence-tier clarification (added after release): D3D11 is the
instrumentally validated live path; D3D12 is observed working in real games
with active-engine runtime instrumentation currently inconclusive. Some
wording below predates this clarification. See VALIDATION.md.

Smooth Motion SM86 v0.4.0 — Consumer Preview

Driver-level NVIDIA Smooth Motion for RTX 30-series (Ampere SM86) as a one-click
Windows utility. Not a DLSS Frame Generation mod.

Download

• SmoothMotionSM86-Setup.exe — recommended (installer)
• SmoothMotionSM86-0.4.0-win64.zip — portable copy
• SHA256SUMS.txt — verify your download

Highlights

• One-click master ON/OFF and per-game switches
• Automatic GPU + driver detection with plain-language compatibility
• Game library (Steam / Epic / Game Pass) — pick a game and Play
• Fail-closed, DriverStore untouched, no NVIDIA binary redistribution, reversible
• Distribution-only build: no source, no readable recipe

Supported environment

• Validated: RTX 3090 + NVIDIA driver 616.64, Windows 10/11 x64, D3D11/D3D12
• Experimental: other RTX 30 / SM86 boards with the same driver
• Not yet supported: other driver versions, 32-bit titles, anti-cheat titles, multi-GPU

Known limitations

• Unsigned Consumer Preview — SmartScreen may prompt; verify the SHA-256
• Storefront titles that relaunch into a new process (some Game Pass / Epic) are
  not reliably followed yet
• Windows Vulkan is experimental; no in-game toggle there
• Higher base FPS is strongly recommended; very low base FPS increases artifacts
  and perceived latency

Upgrade

Install over the previous version; your Manager settings are kept. To remove:
Uninstall (Start Menu) — it does not touch your NVIDIA driver or games.

Verify

Compare the published SHA-256 in SHA256SUMS.txt.

---

Assets rebuilt on 2026-09-24 (release hygiene only: same features, same behavior and the same validated driver adaptation). The checksums in SHA256SUMS were updated.

Archivos recompilados el 2026-09-24 (solo higiene de publicacion: mismas funciones, mismo comportamiento y la misma adaptacion validada). Se actualizaron los checksums de SHA256SUMS.

2026-09-24 重新构建了发布文件（仅为发布整理：功能、行为和已验证的驱动适配均不变）。SHA256SUMS 中的校验和已更新。