[NRG-R9T]

Okay, I'm going batty over this one.  I've had my N2 for a bit now and love it. Recently I started upgrading my 1080 movies to 4k Atmos/TrueHD movies and they all fail with a hang or quit back to home screen at one point or another, usually within the first 10-30 minutes of playing. They will also hang on chapter skips/big skips.

|...]

I've tried different cache settings in Advancedsettings, default settings, just about any setting I can think of.

Any guidance would be greatly appreciated!

I had the same problem bugging me until I formated the USB3-HDD from NTFS to EXT4. Problem solved.