I've got the same video card as you, and despite my better judgment (out of frustration of trying everything else to help stop the mini freezes)
I obtained the latest drivers from Nvidia, and I'm sure I'm going to catch crap from someone from using the latest drivers; but they actually have almost all of the bugs fixed in the 9 series drivers. I was running the same drivers as you before I updated them.
I'm running the 91.47, and I played last night for a good while the mini-freezes and stutters were not nearly as bad as before. Note, I still (like others) think it has something to do with the hit sprites hitting the plane especially at real close ranges, D2-300. And I believe it was posted in Waffles sticky about once you have all the other players skins cached it should quit entirely.
But, no more than I get to play that will take quite awhile for me. lol I'm not saying run out and update your driver, I'm just saying I did out of frustration and it seemed to help mine. Although aside from the video card we are running different everything else, so that may not be your solution.
Hope this might shed some light on something for you.
Regards,
Darias
