I cannot reproduce this bug on my 970m.
I'm still searching for the pattern of what causes it. It seems to be related to 1070 and 1080 cards but some users do not see a problem.
I've made contact with Laminar today to see if we can gain any insight into what might be happening but without a consistent set of data as to what causes it I can't give them much solid direction either.
For now, use a non beta install of the sim.
The VR beta branch is undergoing many changes under the hood to optimize the XP rendering engine.
I'm as annoyed as you are.