I purchased a new ROKU Ultra recently to use in my new very high end theater system. All other boxes, AppleTV, etc. work great. When I startup my ROKU the screen is flickering and does not stop. I’ve tried everything I could think of and finally changed the resolution from Autodetect which was 4k HDR… the top display choice. I tried each other resolution and none worked until I tried plain old 4k. It has a beautiful clear picture. The autodetect was correct however, projector an d processor are happy with the best possible resolution available on ROKU. So, I am forced to accept a resolution that doesn’t take advantage of the best picture choice, but it also defaults back to Autodetect which chooses the right resolution, but it flickers like crazy.
What do I do to fix this. The geniuses at ROKU told me to call MadVR and ask them, that it is not a ROKU issue.
I am working on this but somehow I think it is a ROKU issue.