There was a bandwidth limit in earlier days, but it’s not used anymore, thus N/A.
The only speed between customers (around the globe, not necessarily in the same city) and your node is matter, perhaps your node is far away from the customers, so your node loses races for pieces.
Speed to/from satellites doesn’t matter, the customers data is flowing directly between the customer (or their nearest gateway, if they uses S3) and your node.
I would also check the vetting status:
Also please provide the result of the command:
df --si -T