We just released update with a lot of optimizations that should address most of the performance issues.
Fixes:
- many performance fixes
- quality settings as option ingame
- dynamic resolution switching option
- checkpoint during mech levels
- and much more
Here's little comparison video showing first level before and after optimizations with SteamVR frame times chart.
https://www.youtube.com/watch?v=iIAn6yitf6k