Without logs we’re just guessing. In addition to Proton logs, check the system journal aswell. ‘journalctl’ is the command for it. If I would be forced to guess, GPU driver bugs do often cause system to freeze. While at it, you could enable MagicSysRq if CachyOS hasn’t enabled it for you, and use REISUB to try to recover. Arch wiki will guide you with these better than I could.
Without logs we’re just guessing. In addition to Proton logs, check the system journal aswell. ‘journalctl’ is the command for it. If I would be forced to guess, GPU driver bugs do often cause system to freeze. While at it, you could enable MagicSysRq if CachyOS hasn’t enabled it for you, and use REISUB to try to recover. Arch wiki will guide you with these better than I could.