The downloader is painfully slow. There's multiple reasons.
- As stated before, it's a new feature, we've only deployed it on the EU servers. Once stabilized, we'll deploy it on US servers too.
- For some reason, the download is way slower on Android compared to my test on PC. I suspect it's related to multi threading management by Android
- The way RenPy handle the whole process (hash checking downloaded files/integrity checks...) Even during my tests on our local network, the download process take ages
So there's possible improvement.
But first we need to fix/stabilize the whole process