I had no issues till I noticed yesterday my AV receiver was saying the source was 2.0 instead of 5.1
I have boost, surround source selected in settings.
PS4 outputting 5.1 for games and Netflix but no longer for NowTV Movies, not sure why this is happening. (These a 5.1 movies)
I've reinstalled the app, and checked the settings etc. It just seems to have stopped working.