@TeamYouTube all movies/shows I’ve purchased on the google play app load at a very slow rate when I try to watch it from YouTube. Normal YouTube videos load normally and watching from the play app is fine.
Thanks for the tag – if you haven't already, try clearing cache & cookies. Also, make sure that you're running the latest version of the YT app. In case you're still having issues, you can always reach out to our live support team. Here's how: https://yt.be/help/purchases