

Unplayable, main menu bugged out
Game starts to main menu, but it is bugged. Shows 4 empty profile slots. Menu at the bottom is not clickable, clicking on load, delete or X only lets the main menu disappear and leave you with the 4 empty profile slots.
No issues found after lowering settings
Completely unplayable before changing settings. Got 2fps with default settings
Unable to launch
Tried several Proton options, was unable to launch with all.
Proton-6.5-GE-2
If you just start into the game right away, you have ~10 FPS and the game is basically unplayable. I recommend the "middle" Graphics Settings, since this performance issue seems to be caused by Texture-Details on High or better. IMPORTANT: To accept the graphic settings, you need to press the accept button in the Screen-Options (where you can set the resolution, brightness, etc.) and may restart the game once or twice. Still not very sure how this works.
Frame rate is like a slide show and essentially unplayable, even on low settings
Mouse sensitivity seemed cranked way up
Choppy and extremely low frame rate for a 980ti

at least with my setup the frames are WAY too low even on minimum to be playable
even with minimal settings the frames cratered to 1frame per 5seconds,.. it was unplayable