Scene Depth Buffer corruption with VR on AMD GPUs

Depth buffer corruption/artifacts when using VR with certain AMD GPUs

Tested with Oculus DK2, User reports with Oculus Rift

1. Install AMD GPU and update to latest drivers (18.8.2) (Confirmed internally with AMD R9 290, user reported with R9 390, RX580)
2. Launch a 4.20 project
3. Play in VR preview or Package with 'Start in VR' enabled

Result: Depth buffer corruption (see images)

"Workaround": Reverts to normal after taking a High-Res screenshot

Also can be circumvented by not using directx 10 / 11