The 77.77 drivers have served me well for a year in Fs9, but with my FSX in the post I thought I'd better follow the often-offered advice to upgrade to the latest, so installed 91.47. Result: nightmare. Whenever I take any action - change scene, time, weather, aircraft, etc - I get parallel bars flashing across the screen, like a duff TV set. Scenery building has gone to pot: slow, errartic, long pauses. From the air an airfield will often show as a white patch and I have to hit scenery refresh. I'm getting jerks and stutters and hesitations I've never experienced before. My instinct is to revert to 77.77, but I wonder - has anyone else had problems with 91.47, and if so how did they solve them? Is the answer perhaps somewhere in that complicated new Nvidia control panel?Bottom line: is there truly any benefit in changing from 77.77, and if so, can anyone recommend a really stable driver version?Any advice would be much appreciated...Amd 4000+Geforce 6800GT2 gigs RAM300 HD

Hello,I use the XG 91.47AD with success on an "old" system.Do not forget to use Noell's procedure when changing the driver?BTW I also installed the latest DirectX update at the same time.