This app is terrible for downloaded content

I downloaded one movie and three episodes of a TBS show and absolutely none of them worked . It is impossible to make it more than a few minutes without halting, restarting and/or freezing. On top of that the downloads are impossibly slow compared to Amazon Prime video downloads. Live watching works well enough, but the new download capability simply does not work

govy1 about Xfinity Stream, v4.0.2