Addresses an issue in Microsoft Foundation Class applications that may cause applications to flicker.

[MalcomAce]

Microsoft released a win 10 update:
Maybe it helps:

"-Addresses an issue in Microsoft Foundation Class applications that may cause applications to flicker."

https://support.microsoft.com/en-us/help/4346783/windows-10-update-kb4346783

[herf]

We don't use MFC, that's probably about windows dialog boxes flickering when they redraw...