I have an ATV2 and been using it for years to stream music and videos from my Mac, watch Netflix, etc. I now also have an iPhone 7, but the videos I recorded with the iPhone stutter when I stream these from the iPhone to the ATV using Airplay. With my previous Iphone 5 I never had such issues. The ATV is wired and all network settings have been checked and iOs updated. Streaming Youtube and from other apps on the iPhone to ATV also works fine, so it seems the setup is ok and the problem really lies between videos created with and stored on the iPhone 7 and the ATV2. Will upgrading to an ATV3 solve my issue? Maybe the ATV2 cannot handle the iPhone 7 video stream? (I prefer ATV3 over 4 because an optical audio output is needed).