Why is this game so laggy for me?

I go to South Dakota State University, which should answer my question, because our internet isn’t the best:

However, besides the occasional disconnect, I can play any other Halo/multiplayer game just fine on this connection. Halo 4 is another story. I have yet to experience a game where I haven’t lagged all over the map at one point. Some points during the game I’m fine, other points it’s like I’m being standbyed in the Halo 2 era. I’ll also be sitting in the lobby and it will say that I have no connection to Xbox LIVE, despite being able to access my Xbox LIVE profile/friends/messages/parties/etc.

I really want to try to enjoy this game, because the last game (Halo: Reach) left a really sour taste in my mouth. I’d like to experience Halo 4 with a decent connection, so does anyone have any reason why only this game would lag so much?

I’d like some kind of answer. I live in South Dakota but my gameplay feels like I live in Australia…

I live in CA/ California and i have this prob basically cant play multiplayer or spartan ops