Dope. Aside from the usual, outside of wifi situations, if your networking skills are (like mine) not to the point of confidently, and securely opening ports, this is a great stopgap. It's a nice-to-have feature that's missing from the official app, last I checked.
I think the official app does let you download but its literally a file on your phone. So you need a file manager and a video player that can play your file in addition. There is generally no management of downloads or a way to see what you downloaded in the official app.
Findroid improves on this massively, I however keep having the issue it doesn't seem to download images from the library, so all my downloads are grey boxes. Just a cosmetic issue though as they all play fine.
At the time I had 200mbit symmetric, but was behind cgnat. Haven't needed it since I switched providers. Sounds like I may have misconfigured or it wasn't a good fit for my situation