I just wanted to say a sincere THANK YOU to whomever the people are behind rclone. It allowed me to transfer almost 4TB of data from Dropbox to my Google drive flawlessly. I was going to try do it all through a browser before I found out about rclone so this has saved me an aneurysm! 
Big tip for anyone doing this is to pay for a cheap VPS (i used a $4 Hertzner one) and run it from there as you get to use their fast Internet. The transfer went from 9 days using my 500MB home fibre internet to just 30ish hours using the VPS.
Anyway, thanks again! You are SO VERY MUCH appreciated!! 
