How has your experience been when usage is above 500gb?

First off: Each file you upload through the website must be 50 GB or smaller. If you're using the Dropbox sync tool, files must be 350 GB or smaller. Second: As long as you have a fast internet connection (e.g., I use 1000 Mbps on Xfinity — I work from home), syncing is pretty great. The biggest and best additional recommendation I make to others is to sync Dropbox to a large external drive (if you're working with HUGE files, 8 TB might be the way to go.) If you need more clarity, please don't hesitate to ask.