@YouTubeTV Why can’t I watch YouTube tv with my Apple 4K tv?? 
We'd like to help. Mind sharing a few screenshots and more info for us to look into it? Keep us posted.
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Can’t share a pic now but anytime i pick a Channel it just keeps buffering.
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That's odd. Does this happen across devices? Have you tried restarting the device? Also, try these basic troubleshooting steps: https://goo.gl/GuoZa4 . Let us know if that works.
End of conversation
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