I have installed Diamond Viper V770 ATX AGPx2/4 32MB set jumpers to 4x. I have ga-60XT agp 2x/4x motherboard. I installed nvidia tnt/tnt2 71.84 driver. When i play games they wont work right half-lfve runs really slow about 3 fps. fifa 2001 shows black shadows when match starts the 2d works in match ok. i tryed a geforce 3 ti200 and had the same problems can someone pls help i dont know much about agp.