45.23s are what I run on my Ti4600. They seem to be the most stable with the GeForce 1, 2, 3, and 4. If you move to the latest drivers, you'll likely get texture corruption and slowdowns... very odd - I'm curious as to why Nvidia seemingly sabatages performance in their older cards.....
I'm at another roadblock--I just got the FAR CRY demo, and I need at least 53.03. What's the best drivers above that, or is 53.03 the best? I want to play Far Cry, so I have no other option.