Sometimes party memebers, more often melee weapon users, will be choppy and walk backwards. The melee user will be unable to do damage with any melee aoe ability. Auto attacks seem to work. From the melee perspective he is facing the right way, but to the other party members he is running backwards, facing and attacking in the opposite direction as the enemy. I have screenshots showing this, but I dont see how to upload here. Multiplayer is nearly unplayable...