Play "Competitive or "Old School" In those matchmaking options you only play vs humans. I think it only adds a bot if you are the only 1 in the server. Plus I'd say 90% of of my matches in those 2 are pretty good. But if I play any of the other matchmaking options it seems like 100% of the games it finds are lagged up to the point it's unplayable.
ALSO forgot to add in title this is for XBOX 360