After tapping "+", the UI gave no indication of the tap event. After a couple of seconds, I hit "+" again. Another pause, then the UI caught up and liked the displayed profile, and the one behind it. The UI should update immediately after a +/- tap, only process one tap per profile, and indicate the event was caught as soon as it occurred. Maybe disable the +/- buttons or add a short countdown timer (a tap "cooldown" period, say 3 seconds?).