Hi guys, I'm having issues while setting up my Panasonic UltraHD Blu ray Player, combined with the Onkyo amplifier (TX-NR757) and Sony 2015 4K HDR TV (XBR-65X900C). I am not getting any HD Sound from bitstream (e.g. Dolby True HD, DTS-HD Master Audio, DTS X, Dolby Atmos while connecting the amplifier and TV via ARC (both supported), and Blu ray (VIDEO out HDMI) to the Sony TV (MHL HDMI); and Blu ray (AUDIO Out HDMI) to my Amplifier (HDCP 2.2 Blu ray HDMI port) also both supported. 4K picture quality is AMAZING while connected to the TV directly. But only getting Onkyo's standard coded sound channels such as: THX Cinema,THX Surr EX,THX S2 Cinema, TV Logic, All Ch Stereo,Full Mono, Theater, Direct, Dolby D& Dolby Surr) I've tried everything with adjusting the TV and Onkyo settings on HDMI Standby through, HDMI CEC without any luck. Previously, I had everything connected in a simple manner. (1) ARC connection (TV-AMP) and (2) Blu ray setup (VIDEO OUT- VIDEO/AUDIO HDMI terminal) to the Blu ray's receiver input. I did received the HD bitstream Channels, but my issue was that there was some flickering while loading the Blu ray component, specially the HDR movies and some audio delays. I was advised to replace the HDMI wires, which I did. I got some AudioQuest SKY 4K HDR HDMIs. And problem still persisted. That's why I decided to go to the AUDIO OUT choice, which fixed the Blu ray loading flickering and audio delays. But yet, cannot get the Good sound! PLEASE ADVISE!