I note a significant improvement. Haven't properly measured it, but i upped the pixel density from 1.4 to 1.6, and the FPS (in VR) never drops below 45. Since I had these issues, I have been busy trying to sort it thus no time for testing. It will be interesting to see what settings i can tweak for better looks without dropping below 45.
I have a i7 8700K @4,5, 16GB DDR4 2666Mhz
EDIT: I used reach around 25-45 fps.