Yeah that's what was so bad in the beginning... all these problems seem like stuff nvidia drivers should have nothing to do with. I thought some new windows update caused all this until I checked the date I installed new nvidia drivers and saw there was a correlation. Then later saw crashes explicitly blaming nvidia dlls. That it turns out changing things in the global profile causes it (and different things for different users) is still weird. But at least all of us have given Nvidia something to help them debug it.