Hello. I have been having problems with both HDMI ARC and Optical from my 2013 Panasonic Viera E6 into the Sony STR-DN1080.

I notice while watching TV or the TV's Netflix app, the audio can do out of sync (very noticeably behind the video). It's goes badly out of sync when watching Dolby Digital content, especially after pausing/rewinding.

I have also had problems with audio dropouts on both HDMI ARC and Optical when watching Dolby Digital content on TV or the TV's Netflix app.

I never had such problems with my old Onkyo non-HDMI AVR via optical.

Anyone else?