Welcome to the Roku Community, @TomHoang!
Thanks for informing us. Rest assured that we'll review this concern and help you find the best resolution so you can set HDR on the Peacock app during playback.
In order to narrow down the cause of this, it would be appreciated if you could provide us with additional information such as follows:
- Could you please provide us with a photo of the washed-out display you've observed on Disney Plus? (How do I insert an image in a post)
- Have you tried pressing the star (*) button to check for available display options during playback on the Peacock app? If so, please let us know the options available.
- Do you get HDR when using other apps like Netflix or Fandango at home on a title that shows HDR?
We'll be anticipating your response.
Best regards,
Carly
Carly Y.
Roku Community Moderator