Screen painting anomoly (not Kingston specific)

My projects are pretty light, so I often use the "SONAR X3 Demo - Javier Colon" to stress test things, adjust buffers etc.
Granted, I cannot remember when I last opened this file, but was probably around July when I rebuilt this machine (on the "G" update).
 
After loading Kingston, when opening this file (data is on a HDD, so contributes to the load times). Initially, the project loads (Control Bar and Track View visible), but then the screen "whites out" so that only the now time and Control Bar are visible... then it paints in the PC module (also open in the "default" view) and repaints the Track View (scooted over to give the PC module room). Probably 1/2 second of "white out," which doesn't affect anything other than grabbing attention. X3 exhibits the same behavior, but X1/X2 do not (the non-VST3 versions). Smaller projects also do not exhibit this, so may be a combination of project size/paint algorithm.
 
I have not tried rolling back yet, and the only real "issue" with this is it is painting the display twice. I am curious is anyone else notices this, since I am definitely not ruling out that my long-in-the-tooth machine has finally degraded enough to warrant replacement.
 
Edit: I just began rolling SONAR back and the issue persists. Unfortunately I saved that cwp after Gloucester (got the warning on load of being saved as a later version), and deleted the bundle file it came from. I will need to track that down to better determine "when," but the white out duration is shorter on earlier versions, so may have always been there, just not long enough to comment on.
 
Edit2: This issue may very well also coincide with a new Nvidia driver release (v359.00 on 11/19/2015). I have noticed a paint issue as well in StarCraft 2, which was removed by dumbing down the rendering in that program. I think my card is getting old enough now that it is falling into obsolescence, so these "all in one" releases are not necessarily good.