Reply #1 Top

Is your Scaling set at 100 % ?

Reply #2 Top

Yes. 

I have a 4k monitor.

i tried both 100% and 150% with no difference.

I have several backgrounds, both 4k and and with less, still the same result.

My drivers are all updated 

Reply #3 Top

What graphics card do you have?

Reply #6 Top

Solved my problem.

Found out it was set to use Directshow EVR, and changed it to Directshow WMR-9 for videosupport

Reply #7 Top

Glad to hear , Solved .

That would of been my next  recommendation to see if one of those two other 

options works for you .