Halo 4 Connection Issues in MCC

A friend of mine for the last week or so has been unable to complete a match in Halo 4 multiplayer in the MCC. Once the match starts he lasts anywhere from a few seconds to a minute maximum, and then gets a blank screen and he is ejected from the game. He’s in Northern Ireland and has tested it with another friend who also had the same problem. His Internet service provider is BT.

Is there anyone else experiencing this or is this a location based problem?

same in halo 2 and 2A as well as halo 4… instability issues across all.