Apple doesn't even play nice with Apple
Brought two Apple TV v2 with a couple of iPad Air's (v1), both worked great but EVERYTIME either the tvOS or iOS was updated AirPlay would stop working. Over time upgraded the ATV to v3 and the Air's to v2, guess what? Still the same behaviour. Even Flixster would break on every update, so would be without AirPlay on Flixster for a few weeks.
Seems stupid that Apple couldn't get their own devices talking to each other all the time.
Tried the Firestick, wasn't impressed TBH, so now use NowTV (Roku) boxes, at least they are stable.