A friend of mine has a Sharp 70inch LED paired up with a basic Samsung Soundbar.
After watching TV for a certain period of time (approx 10-15mins), the sound begins to lag. (Peoples mouths move and the sound comes out late). Its sort of like watching a dubbed/translated Japanese film.
This happens even no matter what the audio-sync is set to.
The funny thing is, once you change the channel on the television and come back to what we were previously watching, it goes back to working perfectly.
Thanks guys and gals.