Modder/Author on Reddit
Nexusmods - VR Pimax canted display UI Fix at Subnautica Nexus - Mods and community
I basically copypasted the code from the existing Subnautica: Below Zero Pimax mod with some minor tweaks, and it works perfectly for the original game.
This removes the need for Parallel Projections (no more double vision UI) and also has culling fixes. I didn’t implement the Below Zero mod’s UI scale changes.
This mod + the recent Subnautica performance update + using PimaxXR runtime with OpenCompositeXR means this game now runs a lot better than it ever did before. Although, it might still be worth holding off on a playthrough because there is a motion controls mod actively being worked on.