I've been exchanging emails with Josh Grohmann who's apparently the lead software engineer at unknown worlds. I'll update you if he can help me find a fix for the problem. I'm literally having the same exact problem as you so it isn't an isolated in…
I sent this originally to subnautica-support@unknownworlds.com
So I've tried putting -force-d3d9 into the launch properties and got the error
Switching to resolution 154x0 failed, trying lower one
All resolution switches have…