1.1 — Major performance improvements

Major performance improvements are the focus of 1.1, alongside new settings and a smaller installation package.

Comparable manual race recordings on a Ryzen 5 5600X and RTX 5060 Ti, at 60 Hz and native resolution with interpolation off and VSync on, show:

Measure	Before optimization	1.1
Average FPS	43.75	60.02
Typical frame time	23.12 ms	16.67 ms
Slow-frame time (99th percentile)	30.84 ms	17.95 ms
Peak process RAM	530 MiB	204 MiB

That is about 37% higher average FPS, 42% less slow-frame time and 61% less peak RAM in the recorded workload. Reused graphics upload buffers, fewer unnecessary CPU/GPU waits, faster graphics command processing and optimized static floating-point blocks drive these improvements. Heavy scenes still have occasional dips, and testing across all modes, tracks and PCs continues. Measurement details.

Also included:

• Custom keyboard bindings with clear and restore-default options.
• Internal resolution from 1× (640 × 480) to 4× (2560 × 1920), including HUD and transition corrections.
• Frame interpolation in General, enabled automatically when choosing a display rate above 60 Hz, with a manual opt-out. Game timing stays at 60 Hz.
• Optional game/display FPS counter.
• F9 performance recording with CPU, GPU, memory and audio diagnostics for offline inspection.
• A Windows application icon.

Download Installation.zip, extract it, install the requirements in README.md, and double-click Build.cmd. Select your supported US Xbox disc image; the builder prepares the game files and builds the app. Click Open game folder and launch b2.exe.

The installation archive contains only build sources, required build inputs, setup instructions and license notices. It is approximately 404 KiB. Research notes, screenshots, generated binaries and private game files stay out of the package.

Requires 64-bit Windows, a DirectX 11-capable graphics card, Visual Studio 2026 with Desktop development with C++ and its Windows SDK, CMake 4.2+, Git for Windows, and your own supported US Xbox disc image. First setup needs an internet connection to download dependencies. Existing settings and saves are preserved by the builder.