As Kozzae mentioned, it sounds like it’s related to the ongoing conflict with Nvidia Drivers and DX11. There is an ongoing thread in the Tech Support Forum I’ll link here:
I have the same issue and Nvidia just released a driver update that is a supposed fix on 8/28 and the issue only happened once to me since I updated to the new drivers the other day.
Switching to DX11 actually made it worse for me, but you can try that.