Sounds like they are reducing the play time. On Samsungs you read this stopping at 2 hours and 4 minutes. It's not a setting but folk I talk with write that it's an anti-piracy move. And no, I have yet to hear of any fix.

You do know LG may be watching us? Read http://bgr.com/2013/11/20/lg-smart-tv-spying/
Bob