

Pristine experience

Plays well, though with worse-than-expected performance and an annoying controller problem.
The in-game controller aim assist setting has major problems. Often the crosshair will "stick" to a point that is above, rather than on, the target you're trying to hit and will firmly resist you trying to correct it. The game is more difficult but still playable with it disabled completely.
GPU usage spikes sharply in certain settings, e.g. when looking at waterfalls.

Mouse acceleration

Ubuntu instead of Pop os
Game works fine on a fresh ubuntu (both external and main drive), Pop os had issues running it from an external drive, most likely because of the space in the directory name .../Boomerang X/...

The game runs, but the selection menu is not shown. so I can't choose anything and i'm in the blue room rotating forever
Proton Exp. & 8
Runs great on my Arch Linux system.
Runs perfectly on 6.3-5
I completed the game start to finish without a single issue, highly recommended.
- Ultrawide support without even needing to touch settings
- Achievements work

The demo ran OOTB with no issues
Solid 60 FPS on a RX580, framerate never dropped even when things were getting hectic