Data miner Tex2 discovered two AMD FidelityFX-related dynamic link libraries in the metadata of the Microsoft platform installation package for GTA 6. The file naming and structure point to a new implementation method for FSR 4.1.2, but existing clues are insufficient to prove that the game will ultimately enable this version.
These two files are amd_fidelityfx_loader_xbox.dll and amd_fidelityfx_upscaler_xbox.dll. Social media users Y1ng and blue nugroho compared them with Microsoft's recently released FSR 4.1.2 technical examples. Microsoft's development documentation mentions relevant loading modules and the ffxXboxGetUseFsr4Lite function, which calls a lightweight neural network algorithm version.
This lightweight version is adapted for the RDNA 2 architecture used in XSX and XSS. However, the AMD FSR SDK is a modular toolkit that includes FSR 3.1.6, FSR 4.1.2, frame generation, and ray tracing reconstruction features. The presence of related library files in the installation package does not alone prove which specific technology the game will adopt.
Since the game's core files are still encrypted, the actual FSR version and default settings cannot be determined at this time. Rockstar has previously confirmed that the PS5 Pro version of GTA 6 will use PSSR and ray-traced shadows, targeting 30 frames per second; support for FSR 4.1.2 on Xbox is currently only indicated by file clues and has not been officially confirmed.