Proton GE (glorious eggroll) really should only be used when regular proton fails. It’s a heavier layer than normal proton. In fact even when proton 8 fails, you should try expirmental first before GE. The only thing I use it for are the additional video codecs to get things like resident evil zero cut screens to work. If you aren’t using the additional functionality of GE, you aren’t gaining anything.

Here is a list of everything proton GE does that normal proton does not:

Additional media foundation patches for better video playback support

AMD FSR patches added directly to fullscreen hack that can be toggled with WINE_FULLSCREEN_FSR=1

FSR Fake resolution patch details here

Nvidia CUDA support for PhysX and NVAPI

Raw input mouse support

‘protonfixes’ system – this is an automated system that applies per-game fixes (such as winetricks, envvars, EAC workarounds, overrides, etc).

Various upstream WINE patches backported

Various wine-staging patches applied as they become needed

TL;DR: if your game is working, just play! If not, try expirmental, then GE if still not working. Don’t use GE just because (more overhead).