So every time I watch vlogs on @YouTube on the tv they're happen to freeze halfway, and I need to exit the app completely. But I can watch a 2 hour movie on it without a problem! 

No that's not possible. I've resetted everything again, including the Wi-Fi so let's see what it does now.
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Sure. Let us know if you see otherwise.
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Thank you!!
End of conversation
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Julie Andrews