When I try to fly, I'll take off but most of the time (not all the time) when I try to climb, dive, go forward, back left or right, I can't move at all. Flying down (at least with AO) tilts me nose-down, but I don't move down, so the client knows and sends my attitude (others saw me nose-down too for a while before I finally moved). Also, when I do finally move in a horizontal direction, my altitude increases over flat land too much (more than previous versions I think). All this is with and without Flight Feather flight enhancer.