Uploading to Dropbox with Rclone Browser - upload pauses after every 128mb

Getting a weird behaviour I’ve never seen before, uploading to Dropbox with Rclone Browser - every 128mb, the upload will pause for 20-30 seconds or so, before the next 128mb chunk uploads. Is this something other people are experiencing?

While it’s actually uploading it’s going at full speed, but pausing after every 128mb is making the overall transfer rate quite slow.

These are the settings for the job Rclone Browser is running:

/usr/local/bin/rclone --config /configfile.conf copy --size-only --verbose --transfers 1 --checkers 1 --contimeout 60s --timeout 300s --retries 3 --low-level-retries 10 --delete-excluded --stats 1s source:path destination:path

I think you are experiencing the same issue as the below.

Here is what I wrote in the issue

rclone has to get acknowlegement from dropbox after each chunk before it starts the next one. It can't keep sending them without that acknowledgement.

I asked about this in the dropbox forum - there isn't a solution.

So I think that pause is just rclone uploading the chunk which is quite large (128MB by default) then waiting for the dropbox response.

Increasing the number of transfers will help use up the dead time.