When I had to move a large amount of data from one cloud storage to another (migrating Dropbox and Mega to Google drive) on slow dsl internet, I rented a VPS fo

When I had to move a large amount of data from one cloud storage to another (migrating Dropbox and Mega to Google drive) on slow dsl internet, I rented a VPS for a couple hours from Digital Ocean and installed a desktop, which I connected via x2go. If you have the ability to do this, your home internet connection speed is irrelevant.