I didn't realise CoD4 was also the q3 engine. Though I suspected that might be the case from the shared issues.
It isn't the Q3 engine, CoD1 was, CoD2 was a proprietry engine (IIRC), but modelled closely on the ID Software engine of the time.
CoD4 is an extension of this engine.
There was a fix for the physics/fps weirdness released in Q3 ages ago but the community reacted so badly to it that it was retracted. Kind of odd that they haven't implemented it into CoD really.
I'd rather they just fix the pathetic bullet reg in CoD4 personally

