I had some serious issues with drivers in the 331 series, but not related to PD. The whole system was freezing for 30 seconds at a time - no mouse pointer - in all applications, repeatedly.
This was a regression in nVidia drivers.
The 331.93 beta drivers resolved that freezing issue, fortunately.
From past experience, the drivers should be updated only if there is a fix or new feature you need. There have been many regressions in nVidia drivers over the years. If it's not broken, don't fix it ...
MSI X99A Raider
Intel i7-5820k @ 4.4 GHz
32GB DDR4 RAM
Gigabyte nVidia GTX 960 4GB
480 GB Patriot Ignite SSD (boot)
2 x 480 GB Sandisk Ultra II SSD (striped)
6 x 1 TB Samsung 860 SSD (striped)
2 x LG 32UD59-B 32" 4K
Asus PB238 23" HD (portrait)