I would stay put if everything is working for you. I don't see anything in there that would make me update. I'm on 14.2 and luckily have it back working ok. I downgraded from 14.3 because of issues but I was quite happy on 13.
I have two Apple TV 4's with auto-update enabled. Have not noticed any difference one way or the other. But my usage is pretty basic - Sling, Prime, PBS and lots of my own content via the Computers app.