I have issues with my 5k+. The screen has white flickering pixels all over the place and the screen turns black every few seconds for a short amount of time. It happens in every application.
I tried different USB ports even on an pci usb card, different display ports on the gpu, Removing and reattaching the cable on the headset. I tried a universal power cord but it didn’t really work headset will stay 90% black with it. (specs and connector is correct).