I have heard that there are a couplle of things you can do, besides checking your drivers.
First off, make sure that the internet connection icon that is sometimes on your windows taskbar is off. Also, try higher resolutions. My Geforce2 GTS performs better at higher resolutions. I thought that by lowering them, I would get better frame rates. Well, I kinda did, but got the flickering and tearing. It is obvious that the card "prefers" to be challenged a bit by the higher settings. I also would try the 32 bit settings.
The Geforce2 flicker has been around in AH for a while, but I was able to nip them in the butt just by doing these simple things. Your frame rates might suffer a bit, but they are still very useable, mine are around 30ish at the lowest.
[This message has been edited by Greese (edited 03-29-2001).]