Gran Turismo Sport Gets Unofficial PC Port With FSR 3.1

Gran Turismo Sport, the PlayStation 4-exclusive racing game developed by Polyphony Digital, is now playable on Windows through an unofficial PC port featuring AMD FSR 3.1 frame generation and several performance improvements.

The project, known as RyGT, uses the Ryty runtime alongside a Vulkan renderer developed from shadGT. It allows the original PS4 game code to operate as a native Windows application.

According to the developer's official GitHub release notes, the port includes several options designed to reduce shader compilation stutter.

Players can precompile previously encountered shaders during startup, temporarily pause gameplay while new shaders compile, or group compilation tasks to reduce interruptions.

AMD FSR 3.1 frame generation is also supported. In one developer test, a race running at 57 FPS displayed approximately 115 frames per second with frame generation enabled.

However, the developer warns that visual artifacts can appear around fast-moving objects and interface elements because the game does not provide native motion vectors.

The October 15 update introduced additional rendering optimizations, including cached memory operations and faster texture lookups, reducing shader-matching time by approximately 30%.

A newer October 16 build added an experimental renderer. In a demanding Tokyo Expressway benchmark featuring 20 cars and rainy conditions, performance increased from approximately 32 FPS to 43 FPS.

Despite these improvements, RyGT remains an experimental project with potential performance issues and compatibility limitations.

The port does not include copyrighted game files. Users must supply their own compatible game dump and required system files.

Gran Turismo Sport originally launched exclusively for PlayStation 4 in October 2017. Sony has not announced an official PC version.