Matt,

Did you figure out what was causing this?

We are experiencing very similar issues.

We established that transferring data from an S3 bucket in Ohio through Cloudberry over a network share resulted in very poor and inconsistent transfer rates, weirdly we didnt have this issue when transferring data from an S3 bucket in Ohio through Cloudberry locally.

At the moment we are wondering if its how the data is packaged during transfer.

Im hoping that as you have had more time with the issue you managed to figure it out??