Update:
The proton version as shown in the file /home/username-redacted/.steam/steam/steamapps/common/Proton 5.13/version is:
1623873472 proton-5.13-6b
Help -> System information in the steam client gives the information provided in the attached file: my username has been replaced with the string "username-redacted" wherever encountered:
Update:
The proton version as shown in the file /home/username-redacted/.steam/steam/steamapps/common/Proton 5.13/version is:
1623873472 proton-5.13-6b
Could you try a more recent Proton version like 6.3?
So far this has happened once (but a single instance of a bug that causes the machine to swap itself to death is very noticeable), and I don't know how to reproduce it. I've set Steam to use Proton 6.3 and will report if it recurs.
proton 6.3x1 2022-02proton 5.13x2 2022-02proton 5.13-6bx2 2022-02
I am running Ubuntu 20.04 on a rig with 32 GB of RAM. While playing Subnautica tonight, I started encountering significant stuttering, followed by a complete lockup of the system at the keyboard. I ssh'ed into the system (which took at least 5-10 minutes to get from a password prompt to a shell prompt), and on running top found winedevice.exe to be using ~85% of RAM, with total system swap usage around 32 GB. Typical total memory usage on the system tends to run 10-20 GB depending on what I have running, so I estimate that winedevice was eating up 40-50 GB. I killed winedevice.exe and Subnautica, but winedevice basically pushed everything else out to swap, so my ability to interact with the system is minimal while everything gets pulled back in. I'm posting from a separate device and will post Proton version info, etc, once the system is usable again.