Subnautica

What works

The game itself works nearly flawlessly, all features and areas appear to be working and it installs without any complaints from Steam. Performance is satisfactory, and about on par with Windows (it might be a little less, though, especially near seabases)

What does not

There appears to be no "High" option for water quality, some mods (namely the map one) do not work. There is minor z-fighting in some parts of the cyclops. Mouse locking mostly works, but occasionally glitches out, especially when alt-tabbing into a different window. 

Workarounds

You need to run the game with the -force-glcore45 argument to run it natively on OpenGL (rather than DX11). I followed the instructions on this Reddit post. 

What was not tested

I didn't test the full end-game yet (up to Lost River), nor did I test this on multiple monitors.

Hardware tested

Graphics:

• GPU: AMD
• Driver: open source

Additional Comments