You must use a High Speed HDMI (2.0 or 2.1) cable. Older cables may cause the screen to flicker or fail to trigger HDR mode. Troubleshooting Common Issues

Devices like the Nvidia Shield TV Pro or Apple TV 4K are the gold standard for handling high-bitrate 4K files with Dolby Vision.

Use MPC-HC with the MadVR renderer or the VLC Media Player (ensure it's the latest version for DV support).