What's with Spartan Ops lag

does any body else have lag issues when they are trying to play Spartan Ops with other people in match making, it’s getting really annoying whilst trying to play through a Spartan Ops mission and all I do is lag even though my connection is fine can any body tell me why 343 have made it so that it uses your internet connection and not a server like they have for war games it really would save a lot of hassle.