Hello,
Sorry to hear you are having trouble.
When groupu turned on, I got my windows of office (word, excel,...) flickering as my recording video below.
https://streamable.com/4s30fr
We were able to repro this a bit but not nearly as drastic as yours (and we don't know why).
If you add a second Word instance to a 1st one, so you have two in a group, does it happen then too?
Thanks for your feedback and help figuring it out.
Sean Drohan
Stardock Support Manager