bg3fgvk v1.0.0

Free DLSS Frame Generation (x2 / x3 / x4) for Baldur's Gate 3 on Vulkan, via NVIDIA Streamline. Works alongside the Script Extender and Mod Configuration Menu, and now alongside DLSS 5 Neural Rendering through OptiScaler.

What's new in 1.0.0

• Less ghosting on camera movement. The motion-vector scale handed to Streamline was 1500x too large (Streamline multiplies it by the render size before the driver sees it), so DLSS-G leaned on optical flow. The driver now receives the same value as the reference recipe. New fgvk.ini key MvecScaleNormalized (default 1; 0 restores the old behaviour for comparison), and fgvk.log prints the value the driver actually receives.
• OptiScaler compatibility. Overlays that hook Vulkan from inside the loader's vkCreateDevice (OptiScaler) are routed above frame generation, on the game thread, instead of onto Streamline's frame-pacing thread. The OptiScaler menu no longer freezes the game with frame generation on.
• DLSS 5 Neural Rendering guide (docs/DLSS5.md): run NVIDIA's DLSS 5 pass alongside frame generation through the OptiScaler_DLSSNR fork. RTX 50 series only.
• Shorter README; developer details moved to BUILD.md; unit tests (fgvk-tests).

Install (3 steps)

1. Install Native Mod Loader: extract its bin folder over the game's bin folder (it replaces bink2w64.dll), and make sure bin\NativeMods\ exists.
2. Extract the contents of bg3fgvk-v1.0.0.zip into the game's bin\ folder (where bg3.exe is). Merge NativeMods when asked. You get bin\NativeMods\fgvk.dll and bin\NativeMods\Streamline\ (the NVIDIA runtime; leave it there, nothing else to copy).
3. In-game: Vulkan renderer, DLSS on (any quality or DLAA). In Windows: Hardware-accelerated GPU scheduling on.

Load a save; frame generation starts by itself a couple of seconds into the world. Numpad * toggles it, End cycles x2/x3/x4.

Upgrading from 0.1.0: replace bin\NativeMods\fgvk.dll. Your fgvk.ini keeps working; the new key defaults on.

Requirements: RTX 40 series (x2) or RTX 50 series (x3/x4), Vulkan renderer, DLSS enabled, Hardware-accelerated GPU scheduling on.

Contents: NativeMods\fgvk.dll (the mod), NativeMods\Streamline\ (NVIDIA Streamline 2.12.0 runtime, unmodified, license included), README, INSTALL.txt.

Thanks to !FingerPaint for finding the DLSS 5 combination and to Dagherbou for the OptiScaler_DLSSNR fork.

bg3fgvk v0.1.0

Free DLSS Frame Generation (x2 / x3 / x4) for Baldur's Gate 3 on Vulkan, via NVIDIA Streamline. Works alongside the Script Extender and Mod Configuration Menu.

Install (3 steps)

1. Install Native Mod Loader: extract its bin folder over the game's bin folder (it replaces bink2w64.dll), and make sure bin\NativeMods\ exists.
2. Extract the contents of bg3fgvk-v0.1.0.zip into the game's bin\ folder (where bg3.exe is). Merge NativeMods when asked. You get bin\NativeMods\fgvk.dll and bin\NativeMods\Streamline\ (the NVIDIA runtime; leave it there, nothing else to copy).
3. In-game: Vulkan renderer, DLSS on (any quality or DLAA). In Windows: Hardware-accelerated GPU scheduling on.

Load a save; frame generation starts by itself a couple of seconds into the world. Numpad * toggles it, End cycles x2/x3/x4.

Requirements: RTX 40 series (x2) or RTX 50 series (x3/x4)

Contents: NativeMods\fgvk.dll (the mod), NativeMods\Streamline\ (NVIDIA Streamline 2.12.0 runtime, unmodified, license included), README with configuration and troubleshooting.