ROKU auto detect on OLED 55cx hangs on Dolby Vision
I have an OLED 55CX with a 4K ROKU Streaming Stick. When the display type in settings is set to AUTO Detect the picture setting always defers to Dolby Vision regardless of the the incoming signal. The only way to view 720/1030/4K TV in their intended format is to manually select that option and keep AUTO Detect off! How do I correct this so I can properly use AUTO Detect?