Apple TV 4K audio out of sync

I’m having some AV sync problems while watching live tv with the channels app on my Apple TV 4K. When the Apple TV is set to 4K 50Hz SDR in the settings, the audio comes like 1-2ms before the video. When the resolution is set to 1080p 50Hz SDR everything works as excepted. Every other app (Netflix etc.) works normally in 4K. Channels app on ios also works normally. Has anyone else experienced this?

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