Results, ranked so far (executed via unix time command where possible; balance based on wall clock observation cross-verified with log files):
- Cyberduck: 12 seconds (!!!)
- cURL + NC's Bulk File API: 50 seconds
- Duck.sh: 1 minute 10 seconds
- cURL (parallel mode aka
-Z
): 2 minutes 20 seconds - Windows 10: 4 minutes 45 seconds
- Rclone: 7 minutes 41 seconds