Haha it's not about pc spec.. guess you never visited their forum after launch? when they got spammed like hell because they've created a game that's shit for most pcs..? I know people that went out and bought NEW PC, best spec there was or build one themself just to play blackops without lag and normal fps and it was only worse! I can play new games on top settings and I can't play blackops on any resolution above smallest and even then I get like 40fps when I don't move
the game is crap, not gameplay wise but execution wise. If yours works normally you are lucky.
and I'm talking about mp not sp.