Apple TV 4K with Philips OLED and Dolby Vision only 8 bit

A reply to: https://discussions.apple.com/thread/250715577?answerId=251809450022#251809450022

Hello everyone,

I wanted to reply to above post, but the topic was already closed. So I hope it is okay, if I start a new one :).

I am using Apple TV 4K to watch content on my Philips 65OLED754. I have severe color banding when watching dolby vision content. The TV also displays 8 bit color depth instead of 12 bit. I couldn't find a solution so far. Even the main Apple TV menu shows color banding when set to dolby vision.

Does anyone know a solution? I would be very happy :).

Thanks and kind regards

Marcel