Every time I play halo 3 coop campaign with a friend the frame rate drops alot making everything go slow to the point of unbarablbility
EDIT: damn I messed up on the tittle
I know what you mean, it’s to do with the peer to peer connection over long distances. I played it with a friend who live very close and it worked fine, just a few disconnections then we would of liked tho but no input lag or slow motion.
But playing with someone over sea (different countries for example) we got the slow motion lag.
All i can say is play with someone who lives closer to you, if that doesn’t work then see if your ports are open and your nat type is open, make sure your friend dose the same.