I got a problem with my Guild Wars game. I upgraded from Windows 2000 to Windows Vista 32 bit and now my performance is very low 14 FPS where I have normally 45-60 FPS). I already tried many things: * New drivers from nVidia. Even the latest ForceWare 158.18 * Various compatibility modes * Used ATITool to check if the card goes into 3D mode at game launch =>> it does When I go back to Win 2000 it runs fine again. There seems to be a small random chance that it starts fine, then the FPS is good again but when I switch map it goes to low performance again. Disabling sound does not help so it's not sound related. System specs: GeForce 7800 GT 256 MB (Non OC) AMD Athlon 64 x2 4800+ (Non OC) 2 GB PC3200 DDR SDRAM (Non OC) Asus A8N-SLI (nForce 4 SLI chipset) Soundblaster X-FI Extreme Music Any clues how I can solve this?