In Sieze Edoras on Altis me and my team manage to get to capture Charlie and we have some of us man the AMV. Almost every time that the AMV gets hit hard and destroyed by the Ai using the Titan AT missiles the game crashes all bar one of us back to the desktop. The person that stays in the game is completely random and doesn't matter if you are a host or another client.
We only ever have 2 players in the AMV (Driver/Gunner). So far for us it has made this mission impossible to finish using the AMV.