It doesn't work fine for everyone else I'm constantly reading about issues with it and I am experiencing the same things. It happens for me when I switch from video to photo and back. I always close every app before I fly and I am on iPad Air 2 flying p3a. I never used another version of the app so I have no reference there but it feels like a software issue.
That's very strange, have a mini, air and air 2. They all perform beautiful, haven't noticed any difference between this app and the last. Make sure your on the newest version of ios and app. Biggest thing on ios make sure you have hardware decoder on.