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As long as you are running the HDMI cable directly from the Apple TV to an input on the TV, your HDMI cable probably needs to be changed to a newer spec cable.
Sorry, there was a problem. Please try again later.HI Jake. What HDMI cable are you using to connect your Apple 4K TV to the LG GX 77 inch Class with Gallery Design 4K Smart OLED TV w/AI ThinQ® (76.7'' Diag), Model # OLED77GXPUA? Have you checked the settings in your Apple 4K TV to make sure that they are set correctly for HDR? Please contact our Support Center at (800) 243-0000 for assistance or contact Apple for the settings for your Apple 4K TV...^IFV
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