Wine FSR

Wine FSR

Starting with version GloriousEggroll 6.13-GE1 it has FidelityFX SuperResolution (FSR) support built-in with the following options:

• WINE_FULLSCREEN_FSR (to actually enable the feature) and
• WINE_FULLSCREEN_FSR_STRENGTH (0-5, for sharpening, default 5)

steamtinkerlaunch offers both options in the Game Menu and FSR can also be simply enabled by dragging the corresponding game into the FSR Steam Category

A Proton Version with FSR support needs to be selected separately manually (so it won't be changed automatically with enabling FSR). Above or a newer GE version can be easily downloaded and installed as usual.