What are your Firestick's video settings?Thanks. I got the the HDMI mode option after I disabled CEC. Tried with both HDMI 2.0 and 2.1. But it turned out to be an anti-climax. Firestick connected to AVR gives me stunning PQ with HDMI set to 1.4. Picture is bright, colors are vivid with no hint of any pixelation. Interestingly the Dolby Vision logo didn't come up though Netflix listed the show as DV. With HDMI 2.0/2.1 enabled, DV logo shows up but PQ is horribly bad. It looks like a poor quality 720p upscaled to 4k. Picture appears highly pixelated, colors washed out with very low brightness.
I think with HDMI1.4, it either runs at 1080p or 4K with SDR but gives superb PQ. I don't know if poor PQ in HDR is TV's problem or HDR is a sham for non OLED panels.
BTW, I couldn't get audio from TV passed to AVR over ARC at all. I even tried PCM. No audio heard on TV/AVR once ARC is enabled.
Which AVR?