Freaky to read your account. I switched to ubuntu desktop like 3 weeks ago, bought a gpu, installed steam (ok, I had to reinstall from apr since snap didn’t work well), 2 days ago I installed cyberpunk and it runs at 80 fps mostly high-ultra settings without one crash so far, no special boot parameters. (I had to edit the exe today so it wouldn’t force controller config though)
It’s insane how far linux has come in the last 5 yrs. I hope it goes on like this. In opposition to amd, linux actually is our friend. :)