Thank you for your suggestion. Unfortunately, it did not solve the problem. I went through the purge and reinstall steps twice, and even upgraded to the most recent version (4.0.0.3).

I continue to have the same problem. When I quick snap a window, the entire desktop goes blank, then black, then everything restarts including Fences. 

Once it happens, sometimes it will be stable for a while (i.e., I can go back to snapping windows no problem), but other times its relentless.

I tried the cleanboot method, and this did not work.

I eventually found this trick from a 2019 post. My problem only seems to occur when snapping during a remote desktop session. I changed the background to solid color instead of a picture and so far haven't seen the problem for a few days. Hoping this tidbit can help someone else.

https://forums.stardock.com/480668/get;3760283