Lagging Problem...

[NesQuiK]

Hi i've just build my friend's comp and he has a problem of lag but its weird
The PC Specs:
P4 D820
ASUS P5WD2 premium
Nvidia 7800gtx (BFG)
Corsair PC5400 (2*512)
2raptor 36gig 10k

There the problem i overclocked 2.8@3.4 on stock colling and everythings run fine.
Battlefield 2 run without lag
Battle for middle earth too
BUT WARCRAFT 3 LAGS IN GAME
-the menus are fast but in game its slow motion they move very slow and i dont know why cuz battlefield2 runs fine

and when i put the default clock(2.8) warcraft run without lag

where's the problem heh? if battlefield2 doesn't lag when overclocked and warcraft3 do lag?

[eddieate]

hmm thats odd, does that motherboard have a PCI lock feature?
Ed

[einCe]

and when i put the default clock(2.8) warcraft run without lag
so just underclock when you play wc3 not a big deal

[IYP]

me thinks his friend dosent have the knowledge to do this...does it work at lower speeds....like 3.3 or 3.2 etc etc