I've played quite alot of muitplayer and from what I can tell, once the dysincs start happening, they get worse and worse until the game crashes and can't be opened again.
Looks like something bugs out at some point and then gets worse and worse as the turns continue.
I've had a few good games but I've noticed a bunch of stuff that can make the game crash in muitplayer. Sometimes if you press the notification telling you somone has won a fight, the game will crash out for anyone who presses it.
That said I've had alot of fun in muitplayer.