Playback Issues - Audio/Video & Power

Help with audio & video playback issues, TV display type recognition & compatibility, HDCP messages, troubleshooting playback errors, advertisements, and resolving power issues.
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ArmyCW3
Level 7

Dolby Vision and HDR only in RGB 8 Bit

I have a ROKU 4800X plugged in to a Hisense U8G.  Regardless of the app I use (Netflix/Disney+/HBOMAX/Amazon Prime) it will only output HDR and Dolby Vision content in RBG 8 bit.

The ROKU detects 4K Dolby vision. I have tried both 4:2:2 and 4:2:0. My Panasonic 4k UHD player correctly outputs 10 bit in YUV420 and other color formats so I know its not the TV

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