Specs: Intel 8400 duo core 3.3ghz
EVGA GTX 465
Windows 7 64 bit
8gb of DDR 2 RAM
Problem: It lags immensely when I step out into the outside world. Whenever that door opens the lag starts. I've played and beaten GTA before and when I came back to it, it does this. The only thing that has changed about my computer since I played it was the graphics card. I have no idea what is going on.