That's strange. In theory vr mode is more power hungry.
Viewing post in Lag on controller input in the last version
Yes, it's really odd, there's no performance problem at all, the game runs smoothly, I can even say it runs better than previous versions, in VR I perceive more FPS's.
Also, another test, I loaded the game in non-vr, input lags, switched to VR, lag disappears, went back to non-vr mode and there's no lag at all.