[TippeX]

it could be possible yep...
the faster pc would presumably have more response time
to network packets and so on... though if the building is
relative to passing time then it really shouldn't matter
as a second etc is a constant..

so if the game is making its own time, then the faster
machine would be at an advantage...

really relies on the code

the faster machine would be more responsive though
and less lagged, so it'd have an obvious advantage that way
you could alter the pc's internal clock rate, but then the
game would most likely go out of sync..