ummm no I can't say the same.
The ATI 'driver issues' are entirely a fanboi thing, it never actually happens, and having used both, I can easily say ATI's drivers are much better. Took me four hours to install Nvidia control panel yesterday, then the system started giving me a BSOD every boot, and is now unusable...
As far as Nvidia running things smoother... what Nvidia card is this? Of course it's going to run smoother with a faster card.