If I had a dollar for every time a graphic driver update screwed my system I'd be rich. For a VERY long time I have consciously avoided nvidia updates as my system is mission-critical. In fact, the only time you should update it is if there is a known-fix included to an existing issue with a game you actually use.
The problem with cause and effect is, as a software developer will know, when a conflict is exposed between one component and another it is always difficult to ascertain which is at specific fault. Now, there are literally millions of users with nVidia drivers/cards, and there are literally millions of users of Fences.
Now, what might be causing issues with a few people [assuming others apart from yourself] is a combination of 'causes' leading to an effect.
What's needed to isolate and replicate the issue is EVERYTHING from winver to nVidia driver ver, card model, screen res, etc. and then perhaps Support can determine which nVidia driver and/or hardware setup causes the issue....