5090 with jittery and spikey graphics

[Darpa]

I know many of you are probably already aware of this but just in case some other poor sod runs into this here was my solution (I spent way too much time on this) : 

Problem: I have a new high end machine and play in VR (see specs below). The frame rate was fantastic but the graphics were jittery and spikey. This would happen a bit in the first mission I would fly but if I did another mission it started to go crazy.

Solution: Turn on Vsync in the DCS settings 

Machine specs: 5090, Ultra 9 285K, 64GB, 4TB NVMe SSD, Varjo Aero