That said, I never have more than five players in a CPU skirmish including me. When everything gets built up there is definite lag, and the game clock almost runs at half-speed. Queuing things up works fine but sometimes it seems to miss my clicks, and units will start to respond to orders in a slow, haphazard manner. That's when there's just way too many units in the game and I'm playing against several CPU opponents however.
For just that reason i upgraded my processor from a AMD Athlon 4200+(Dual core@2.2Ghz)
to a AMD Opteron 185 (dual core@2.6Ghz overclocked to 2.8ghz). And O'boy was there a differance, where once i would give orders and nothing would happen to some of the most intense gaming i've had i a while. GREAT GAME!!!