


100% the game with no issue :)

Stutters after you play for about 30-60 min. Proton experimental makes it slightly better, but still bad. It's not unplayable, and is easily fixed by restarting the game if you have to. I suspect the problem to be Wayland compatibility, because on X11 it gets much, much better.
I tried proton 9 and experimental, and the stuttering happens on both.
In the final level when I was almost done, I had issues with mouse input being very laggy and slow -- But the game allows you to save your level progress and restart the game

gamemoderun mangohud %command%
Pairing this game with ProtonGE tanked the frame-rate down to a stuttery 40-60. Changing it to Proton Experimental increases to a smooth 70-120

This game worked extremely well on my hardware as I played through the whole game without any crashing or bugs.
It is worth noting from mangohud reporting I was able to notice a slight vram memory leak, however even during long play sessions it never got close to my 24GBs of vram!
All levels ran extremely well except for the final level in which the frame rate would dip down to the 100s in some areas.
Works great out of the box, no notes

The game runs as it should, only thing you need to do is to manually change the resolution to 1200X720 or 1200X800 depending on your deck
text too small in general
Just change resolution and modify graphics to your comfort, also text is a little difficult to read.

With latest game updates, it started to working
Worked out of the box.
Works just fine. Played through the tutorial/prologue mission with no major issues.

FPS jumps (165 = > 80), reduced the graphics and it became not very noticeable.

Only happens after alt tab for a few seconds when audio is playing
Mouse will sometimes jump a little, once every few minutes
Lighting can be laggy with soft shadows

Didn't try Vanilla Proton