Hey guys, i've been having a problem for a long long while. whenever i go to a friends house and see their pc emulate perfect dark, it's always 60 fps. but when i try to emulate it at home i'm always stuck at 30 fps, even with the overclocked 1964 emulator.
i've tried lots of emu and pluggins. goldeneye runs fine at 60 fps.

My pc is more powerful than my friends computers who emulate n64

gtx 480
2600k i7 4.8gh