I just installed AC15 and have noticed that while the curser is over the edge of a wall or slab, as soon as the mercedes symbol shows it starts to switch between it and the watch about every second. it makes snapping to division points impossible. i also think it's slowing things up a bit. i find it takes a moment for things to turn blue for selection. this is new since AC14. is there some sort of process that i can change that might be using resources or ram? i've just noticed that it seems to switch slightly faster when hovering over interior walls and the slab than exterior walls and slab. go figure.