@little wing , See post, #2002, you don't Have to pass video through at All with Any AVR. My 4K player has Two HDMI outs.
1, for the audio #1 for Video/Audio. I run HDMI Audio out from my 4K player to AVR, and HDMI Video/Audio out from my 4K player to TV. The only time I use ARC is when I'm watching over the air, AKA antenna live TV. I don't use HDMI sync at all. I did use it for about the first two weeks had No issues with CEC. My Yamaha RX-A4A has absolutely no issues whatsoever. Just the best rich sound I have ever heard! Don't want to sound like I'm bragging,
My Yamaha Adventage RX-A4A sounds better than Any AVR I have ever owned!! Wow! Yeah that's it, if I had to describe my YAMAHA Adventage RX-A4A with one crazy acronym of a word it would be, WOW! The sound quality is mind blowing I tell you!