Hello @TheSchmutzy, we're tracking issues with games run with Proton in the Proton issue tracker. Also, we're using one issue report per unofficially supported game title, so I've gone ahead and transferred this issue report to https://github.com/ValveSoftware/Proton/issues/4450#issuecomment-1303389731.
Your system information
Please describe your issue in as much detail as possible:
While playing Cyberpunk 2077, even in menu, mouse cursor jumps every 20-30 seconds to the bottom right corner of the screen
Steps for reproducing this issue:
It is not my mouse, it happens even when I unplug it, I have tried 3 different versions of Proton, updated my system and GPU drivers, this does not happen with any other game, just with cyberpunk 2077