Dim HDR and Dolby vision picture quality
I recently bought the roku ultra 2020, I discovered when I watch HDR10 or Dolby vision content, it is very dim and has low brightness in netflix, apple tv and amazon content. I compared to my nvidia ...
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I know the differences your explaining. I’m watching Fantastic beasts secrets of dumbledore in Dolby vision on the Roku the implementation in HBO Now isn’t right it’s overly dark where it shouldn’t be with Roku set the regular HDR it’s dark where it need to be with properly lit scenes. Obviously turning off HDR you get a 4K only image. My tv has proper calibration for each mode so of course they will look different but the Dolby Vision on the Roku Ultra is definitely not right at all. I can load a movie on 4K disc and Dolby Vision and lighting is great same with HDR but the Roku Dolby Vision implementation is still messed up compared to regular HDR10.
If anyone is still having this issue I believe I have found the culprit. Under Settings > System > Advanced System Settings > Advanced Display Settings there's a setting called "HDR always on." You should set this to OFF. With the setting on, Roku tries to display all content as HDR so non-HDR content ends up being very dim.
I don't know why Roku defaults this to on. It looks very bad and even affects the Roku menus.
