
Hitting a specific physics object would hurt performance quite a bit on my hardware for a few seconds, but otherwise perfect

The game runs as flawlessly as in Windows 11. Even my steam cloud save data got migrated seamlessly without need to do anything else manual.
My report is marked as tinker but all i'm doing is to use Proton Hotfix from the Steam Compatibility Settings, nothing else.
Works fine

Controllers are not detected properly, certain inputs are unresponsive. Proton experimental fixes this issue.
Performance on default "modern" preset fluctuates wildly between 20 and 60 fps. Switching to "retro" solves the issue by seemingly degrading resolution and applies a crt filter. There are no individual graphic settings, only presets.
Switch to Proton Experimental for controller fix. "Retro" preset for stability, this gives the game a PS2 look which might trigger severe nostalgia.

Game keept goin to a full black screen when any controller input was registered in gameplay, enabling steam input manually fixed
Dual Sense without steam input caused game to black screen
The game starts, and the cutscene works. But after moving around for a few seconds, the screen goes black, and the game eventually crashes.

Highly playable but not optimally by default
Around half the performance I had on Windows with same specs. Can feel stuttering because of the irregular capabilities.

It just works minus some occasional drops to 30-40 fps
Time of day changes caused preformance hiccups otherwise fine
Works right out of the box, no tinkering or futzing required!

Runs decent with no tweaks. Frequent dips between 20-30fps. Mostly stable and enjoyable locked 40fps and "Retro" in-game graphic setting.
Hopefully 60fps is attainable when the full game launches!

Left stick is not responding.
Could not interact with entities in the world.
The game runs great, it's just the controls do not seem to be translated properly.