Today , when i turned on my computer, i started up fallout 3. After the first 2 - 5 minutes it starts to lag and keeps lagging every 3 minutes or so. i turned down the details to low and it still lags. is there any fix and why did it start lagging?
System specs:
Windows 7
nVidia Geforce 8600 GT 256mb
Quad Core 2.33ghz