Hi @searlesk,
Welcome to the Roku Community, and thanks for the post.
The Roku Ultra provides a 4K resolution display with Dolby Vision. To ensure that this feature is displayed while streaming, the TV and channels must be compatible with this. When you connect your Roku streaming device to your TV, the frame rate and other capabilities are detected automatically. Use the steps below to view this information.
- Press Home on your Roku remote
- Scroll and select Settings
- Select Display type
- Choose Auto detect
After this, you will be able to see the options of the supported displays. If the 4K resolution is supported, but you're still having issues playing with high-quality content, then we would be more than glad to assist. Tell us more about what channels you are trying to access that does not display the 4K resolution.
Your response would be much appreciated.
All the best,
Kash
Takashi O.
Roku Community Moderator