I just installed Duplicati on my Synology DS213j. I chose version 22.214.171.124 because it’s the closest to the stable Beta (v126.96.36.199) that has support for OneDrive v2 (MS Graph), which is my back end. My Internet upload speed is 10 Mbps. The backup works, but the upload seems to proceed in bursts of ~10 seconds followed by ~10 seconds of idle time. Thus, the average upload rate is only about 50% of my available upload bandwidth.
I’m using the default block and dblock sizes. At first I thought that maybe the pauses indicate the individual 50-MB blocks being uploaded, but this is not possible because at 10 Mbps, each block would require 40 seconds (50 / (10 / 8)), not 10 seconds. Any idea why this is happening? I’d like to smooth out the upload rate and max out my upload bandwidth if possible.