Have you tried reinstalling the GPU drivers?
How To - How to perform a CLEAN install of your video card drivers.
Updated 9-19-19 How to do a CLEAN install of your graphics card drivers using the Wagnard tools Display Driver Uninstaller A major issue on many systems is the presence of multiple graphics card drivers or drivers that have been incompletely uninstalled followed by the installation of...forums.tomshardware.com
I have 22H2, it doesn't flash using alt tab so could be drivers.