Ideas
I will add here that the game lags like crazy sometimes when i start or restart a stage. Only quitting and reloading the stage "sometimes" fixes the issue. Some people say opening graphics settings fixes it for them but not for me. I'm sure this is a VRAM starvation issue probably due to poor memory management. We all read the requirements for VR BETA, are those still accurate?
Please fix texture/asset streaming!
Are you experiencing the "lags" while using VSYNC?
I've managed to figure out how to bypass the intermittent vsync stutters...
Also figured specific scalability.ini tweaks to minimize GI draw calls that stack up and cause stutters on the last location where I had issues. Seems to be a engine frame-buffer bottleneck since neither the GPU or the CPU cores would get overloaded.
Maybe something related to dynamic shadows culling, I don't really know anything about this stuff...