User blog comment:Argorrath/Activision confirms next Call of Duty for this year/@comment-54.234.190.6-20130213141043/@comment-70.122.107.245-20130213232421

Lag is created by your Internet or the host Internet. None of which is controllable by the game itself. It can match you with players in the same area to attempt to reduce lag but that's roughly all it can do.