Commentaire officiel
Oof. 44 KB/s is pretty painful.

I just tried to download your most recent GeoTiff and got around 2 MB/s which is at least reasonable.
These files are hosted on Amazon S3 (which you can see in the URL) which is pretty much standard at this point.
Be sure to only be downloading 1 file at a time. S3 will take whatever bandwidth you get and break it up over the number of concurrent downloads. This does't seem to be your issue though.
Maybe try a different internet connection if you can. Or an incognito browser. We don't really have anything we can do otherwise...
If it continues to be an issue I would look into syncing your account with Dropbox or Box which might give you a better downloading experience.

