Steam Linux Runtime 4 (Saxton Hale)

/s

2b2t, the oldest anarchy server in Minecraft

The latest (proprietary) NVIDIA driver is nvidia-580. I am not familiar with CachyOS, but it may be defaulting to the FOSS NVIDIA driver, Nouveau, which I personally have had stability issues with.

You can check the driver with the command lshw -c video or nvidia-smi

Another thing you can do is activate logging of Proton with the the launch option PROTON_LOG=1 %command% in Steam. This will dump a file into your home folder.

The first place to start is journalctl (or /var/log/messages)

What GPU and drivers are you running?

Anything in Protondb? Seems like a stable game there, but maybe someone documented a similar problem. https://www.protondb.com/app/1259420