I wonder if its the hardware acceleration issue popping up again, as
mentioned here.
https://www.thewindowsclub.com/hardw...tion-windows-7
https://answers.microsoft.com/en-us/...4-1007fa4578c0

I saw this in W2k and XP and just notching the slider back one or two
usually did the trick, however not all graphics cards have this option.

I think we have gone full circle with Windows 10, based on some of the
others things I have spotted with win10. Perhaps MS are hoping theres a
new breed of newbies to keep busy.

--
Richard