Hey @TeamYouTube whenever I download videos for offline viewing, audio and video get out of sync. My phones is reasonably fast, I think it's the app that's the problem.
That's odd. Please send a feedback report directly from YouTube with these steps: https://goo.gl/WdI0BK . While every individual report may not get a direct response back, we do review everything and use the details to investigate and fix issues. Thanks.