I'm not sure if this really applies to anyone, but we had several people trying to play Warzone at my LAN party last night and couldn't. We could not get matched to a game in either quads or triples or sometimes even duos. I couple times it work as a trio, but it was a mess. Seems like the game can't handle several people behind a single NAT'd ip address. Has anyone heard of this or seen it? OW2 work flawlessly.
I remember years ago we had a similar problem with a game, I think it might have been one of the BlackOps when we all tried to play from our University Dorm it wouldn't work.