The fastest and most robust way to download files is via Filemail Desktop. This app accelerates transfer speeds, and can quadruple the download speed in many cases. It is free to use - both for sending and downloading files! No registration required.
Here is how to use it:
Install Desktop (www.filemail.com/apps) and make sure it's running
Return to your browser window and click on the big Download button. The download will be handled by Desktop which will accelerate the download
Tip: in case you are using Safari on a Mac and you are having issues with this approach, try out Chrome browser.
If you are still experiencing slow download speed - check what speed you are getting on www.speedtest.net. Contact us if the difference in speed between Filemail and speedtest is significant (more than 50%) - we'd like to know!