Yesterday Me, Cpt. Black, Darknova, and TaG were playing a Skirmish map against three medium nod opponents in the Tiberium sun mod, Twisted insurrection. Upon startup, the game was noticeably choppy. You would see the lines of the frame transitions. After playing for a few hours, I went to bed. We had toughed out the lag and defeated one of the opponents. When I left, the lag significantly improved, but was still annoying according to Cpt. Black. When it was just Darknova and TaG, it was very tolerable.
Is this a common problem with multiple players?