My problems on Halo MCC Campaign and Matchmaking

I have to report some problems i found on this game.

  • Regarding the campaign, I had a really annoying problem in Halo 3: When i take the Hornet, I can’t move it up or down. I can only go left, right, forward and backward. - And about the problems on the matchmaking, yesterday I’ve played in Halo 4 matchmaking with my friends. It’s very difficult to find a match, and there are very annoying problems in audio chat. When Xbox is searching a match, the audio chat is very laggy and very late. When a match starts, i can’t hear my friend chat, they can’t hear my voice and they lag a lot. We were 3 people, only my playing on my Xbox and the other 2 friends on a Xbox in another home. When the leader is one of my friend, when the map voting is ended, the game crash and the audio blocks repeating always the same 1/4 second. So I’ve to press the home button on the Xbox and the game stop after a while. So i have to restart it. My friends report that they had the same problem too.What i can try to do to solve this problem?