I'd be happy to take a closer look to see how we can help get you up and running.
What are you seeing on screen? Can you provide a screenshot of the issue you are experiencing? In addition, can you please specify the exact steps you are taking to reproduce this issue?
Once we have this information, we will be able to assist you further.
I too am having an issue with "Ghosting" with my Roku Ultra. I have a new 4K Fire TV. When playing videos through my Roku the video begins to show the ghost images over a majority of the screen. If I exit the video and go to the menu screen, the ghost remains. The screen shadow is normally close to the same pattern of light and dark patches on the screen. I have noticed it when playing the Roku on Amazon Prime videos and on Roku videos.
When I then switch to the same programs on my Fire TV the ghosting does not appear no matter how long I watch on the TV. It indicates to me that the issue is the Roku Ultra. Cable changes don't make a difference.
Same issue. Roku Ultra ghosting the Roku menu screen with app tiles. Shows up very clearly on a red background - if you install the CNET app, their splash screen is red and makes it obvious. I can even read some of the ghost tiles, like Netflix.
More weird, the ghost times don't seem to be from my Roku menu; the patterns don't match my tubes.
LG OLED screen, if that matters. Been happening maybe 2 months (August 2022).
I have a clear screenshot on my phone but no quick way to upload.
The images stand out best on a red background, so I paused on the CNET app splash screen below, but the ghosting occurs in other apps too like HBO MAX. Note "Netflix" pretty clearly above the "ET" and an image that looks like the play button in the YouTube icon below the "ET" and then you'll make out the rectangular outlines of all the other tiles.