I have a Tivo box, a Sony STR-DN1040 receiver and a Samsung UE55HU7500 TV
I have had problems with TV sound being out of sync that is really irritating. Originally I had connection Tivo->Sony amp ->TV via ARC HDMI
I have now changed to TIVO -> Sony amo via optical cable and TIVO to Samsung TV via HDMI ! (which is not ARC)
I have set the Sony to use optical input for sound when watching Sat/TV
Now the sound is a bit out of sync until I use the selector on the SOny to change the input from auto to Optical.
I do not understand why this makes a difference.
Is there anything else I can do?