I have connected my Apple TV 4k to Sony Bravia TV using an HDMI Cable. Sometimes, all of a sudden, the screen starts blinking and Screen resolution (1080p) is displayed continuously. What is happening? I have tried different HDMI Cables, same result.
These are the Developer Forums, where developers of apps for Apple's platforms ask each other for hints and tips on coding.
Your question is more of a product support one, so I'd suggest you ask it over at the Apple Support Forums. Thanks.