It takes minutes to load a game. Minutes to get out of a game. I can't even attempt to play CoOp because of the skipping and lagging.
The Alpha played better than this.
I quit the game a few minutes ago, which took a while to do, and I'm still hearing the menu music.
I can hardly play the local game. Its fine if I stand still and don't try to move. Or look around. Or fire my weapon.