Nats object store list in a bucket slow, sometimes timeout, when there is uploading file process

[minons1]

I observe strange behaviour with nats object store

When there is an uploading file to a bucket, nats obj ls <bucket> operation is so slow, on normal condition when I run the command it only took 0.3-0.5s, but when an upload is happening, the command could took ~2s, sometimes I get timeout (>5s)

Is there anything I should aware of with this behaviour?

I also have the same problem with nats python sdk, at first I suspect it because of the sdk, but I also have the same problem with nats-cli

Any insight would be really helpful

[minons1]

Another behaviour observed

Sometimes upload file speed is slow, but gradually increased after a while, usually when this happens, list object command is also slow

on my regular network condition, I could get up to 3MiB/s speed, but when it is slow it could go down to ~200-500KiB