I wasn't sure where to put this, so I will start here. I've been playing around with some UHD 4K discs and the only way to play anything is to point the player (MPC-HC), at the largest m2t files. This doesn't always work, eg, the "Peanuts Movie", it starts playing about 15 minutes in ??? Of course trying to use the playlist doesn't work. How are others creating back-ups or playing their UHD Discs ?