Black Screen for a Second when entering/exiting RetroArch?

Hi, I have used RetroArch for awhile now, never quite had this before. Recently done a fresh reset of Windows 10.

My TV is set to 1080p 60, my Display settings on windows are set the same

When opening or closing RetroArch with Exclusing fullscreen toggled, I now get a 2 second blackscreen, its never been like this before, and out of Fullscreen this doesnt happen

Any ideas guys? Please help XD