I’ve found aws s3 it’s always been painful to get any good speed out of it unless it’s massive files you’re moving.

It’s base line tuning seems to just assume large files and does no auto scaling and it’s mostly single threaded.

Then even when tuning it’s still painfully slow, again seemly limited by its cpu processing and mostly on a single thread, highly annoying.

Especially when you’re running it on a high core, fast storage, large internet connection machine.

Just feels like there is a large amount of untapped potential in the machines…

It’s almost certainly also tuned to prevent excessive or “spiky” traffic to their service.