Playing Co-op as Avelorn, friend is Nagarythe.
Morathi besieged Arnheim. When we try to load, it de-syncs us.
He's trying to take the city back, because we had to auto-resolve it. It is de-syncing when he tries to attack the city as well.
It gets fully loaded into the map, and we can see dozens of trees floating in mid-air before the de-sync message sends us back to the main menu.