Very low frame rates in 400 and 500 series card using the latest 266.58 driver from NVIDIA.COM.
Driver 263.09 and 260.99 performs better however it still doesn't do nearly as well as older drivers for the 8,9 and 200 series cards.
OS: Windows 7 Pro 64-Bit
CPU: Intel i7 920 2.66ghz
MEM: A-Data 12gb 1600Mhz Low Timed Memory
HDD: OCZ 120gb SSD Drive
GPU: EVGA GTX 580
SOUND: Creative X-Fi Xtreme Gamer
PSU: Antec 750W
1) Install 266.58 driver and AO online game
2) Configure the game to 1920x1080(does not matter, repro in any resolution), or simply follow the graphics/game settings used to reproduce the problem.
3) Play the game
4) Observation: The issue occurs immediately and gets worse in more cluttered fights. Sometimes dropping into the 2-4fps.
8800GT - All drivers work, 70-100FPS
9800GTX - All drivers work, 70-100FPS
9800GX2 - All drivers work, 75-100FPS
GTX 260 - All drivers work, 65-90FPS
GTX 275 - All drivers work, 75-100FPS
GTX 290 - All drivers work, 80-100FPS
GTX 460 - Only 260.99 and lower perform, 25-55FPS
GTX 470 - Only 260.99 and lower perform, 30-55FPS
GTX 480 - Only 260.99 and lower perform, 30-60FPS
GTX 570 - Only 263.09 and lower perform, 30-60FPS
GTX 580 - Only 263.09 and lower perform, 30-60FPS