You can upgrade FSR 3.1 games to FSR 4 with manual DLL swapping — GitHub community discovers FSR swapping works similar to DLSS upgrades

Date: 2025-08-29 18:23:47

GitHub user has discovered that DLL swapping works with FSR 4 in FSR 3.1 games. Allowing FSR 3.1 games to be upgraded to FSR 4 merely by replacing a few DLLs in the game's files.