Just replaced my old basic Samsung TV with a new Samsung 4K QLED 43' and added a Sony HTMT300 sound bar.
PLAYING DIRECT WITH TV SPEAKER (PCM setting)
Noticed on certain channels out of sync - on BBC HD news when it goes to a live broadcast the lip sync is out but seems ok on main program (slight adjustment in audio delay needed). Non HD no lip sync issues but I want HD. Other channels seem ok. HDMI Link - virgin box direct to TV
PLAYING WITH SOUND BAR - OPTICAL (very bad!)
We have noticed sound out of sync on most channels. When TV speaker & sound bar playing you can hear big difference in delay - so sound bar out of sync even more then TV speaker.
-Would upgrade in optical leads help (currently using the ones that came with Sony sound bar)?
-Would connect to the Soundbar to V6 box - optical be better? Although I'd need to unplug to watch Netflix/etc so not great.
Real shame - I didn't realise a upgrade to better tv would knacker my virgin TV watching.