02-19-2011, 09:10 PM
You can change the NTSC/PAL framerates to half or whatever (half would be 29.97/25 for example) in the GS panel of the PCSX2 0.9.7 settings but it won't work in all games so ou'll have to see if it's actually changing the speed of the game and not the FPS.
Core i5 3570k -- Geforce GTX 670 -- Windows 7 x64