[the_scotsman]

Since adding the delay after the refresh rate change, I haven't had it happen again at all. 

I even dropped the delay down to a couple of tenths of a second, so that it's barely noticeable, and this also keeps the fix in place. Still no more issues.

So this is worth trying if you're still having the issue. The small delay isn't noticeable. This was an instant fix for me.