Crazy coop bug for Halo 2A

Me and my friend is going through Halo 2 coop legendary and so fare this is the only level that constantly bugged out on us Quarantine Zone. Bassicly what will happen around half way through the level we end up seeing different things, its like I’ll see him standing still or walking into a corner in an empty/cleared area while he is screaming over the mic he is getting killed. I’ve had this happen on my end too. We end up having to quite that level and do it on solo and the continue on coop after words.
Also should note that Sacred Icon does this as well but it happened to us once and never again.
Anyway I’ve never heard of this happening before so sorry if a thread already exist for this.