Noita (881100)

Compatibility Report

• Name of the game with compatibility issues: Noita
• Steam AppID of the game: 881100

System Information

• GPU: GTX 970
• Driver version: Nvidia 435.21
• Kernel version: 5.4.2-arch1-1-ARCH
• Link to full system information report: https://gist.github.com/SeanRamey/907d867e1cfd0debebfb783db6f87547
• Proton version: 4.11-7

I confirm:

• that I haven't found an existing compatibility report for this game.
• that I have checked whether there are updates for my system available.

Symptoms

steam-881100.log

Game just has very poor performance when you move the mouse.

Reproduction

Just play the game.
I'm sure performance will probably be better with a faster system, but it would be nice if we could get close to native performance.

EDIT:
I have attempted to install the linux-fsync kernel, but couldn't get it to boot. I have also noticed that the performance hits only happen when you move the mouse in game, so I changed the symptoms to reflect that. If you leave the mouse still, it has perfect performance. Not sure if it's a game bug, or due to proton.

PS: Found another compatibility report for Noita, but it was closed and not for this issue. Wasn't sure if I should comment my issue there or not.

Start by reviewing the attached steam-881100.log and the reported environment: Proton 4.11-7, kernel 5.4.2-arch1-1-ARCH, and Nvidia driver 435.21. Reproduce Noita while moving the mouse and compare it with the mouse held still; done means identifying and addressing the source of the performance drop or documenting why it is outside Proton.