For me it just keeps on Buffering viewo..downloading..and then keeps on doing that. I had the same problem with the official version too. The longest I've checked is ~60 minutes and it was right there where it started.
However, for the same file of 1.5GB it took me ~10 mins to download. (Mac)
However, for the same file of 1.5GB it took me ~10 mins to download. (Mac)