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 (22.214.171.124).
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.