Halo 4 Reclaimer Mission

Hey, I’ve been playing the Halo 4 campaign and have run into an issue, a gamebreaking issue. On the mission reclaimer there is a point where the level essentially breaks. The Mammoth is supposed to be driving on land but the ground has disappeared and I get forced out of the mammoth and basically get stuck in the air and can’t move. i have uninstalled the game and re-installed it and it hasn’t worked. Has anyone else had this issue? If so how did you resolve it?