How to reach max speed Dwn/UP on s3 compatible storage?

Seems like you missed my point. Please take a look at this post (from me):
Best way to maximize 100gbps GCP gVNIC? - #6 by Ole

What would the corresponding command be in your situation? and what speed does it show? does it change over time?

What speed and latency do you see when downloading from speedtest.net?

Also please post the redacted output from

rclone config show yourRemote: