Throttling uploads?

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It might not be ignored so much as not give a smooth flow. This isn’t a router, which by the way can often help with traffic flows, and might do so better. Duplicati throttles by sending some data out now and then.

The problem you see might be worse on OneDrive, where the standard amount of send seems to be 10 MiB, which is going to apparently interfere with your other uses. In a test on the latest Canary, setting this

  • --fragment-size (Integer) Size of individual fragments which are uploaded separately for large files. It is recommended to be between 5-10 MiB (though a smaller value may work better on a slower or less reliable connection), and to be a multiple of 320 KiB. Default value: 10 MiB:

to 327680 in Advanced options got me smaller spikes, which maybe other applications can ride through.
This had to be done in conjunction with asynchronous-concurrent-upload-limit set to 1 in order to succeed although there’s probably a bug behind that. Parallel uploads are fairly new and might be calculating wrong.

About → System info gives a good view of the progress, and you can line its data up with network graphs.

Server State Properties section will have a lastPgEvent line that will show your BackendFileProgress that jumps every now and then. On one early test, it jumped by about 10 MiB with several minutes in between. BackendSpeed is a calculated value based on amount per time, and so ramps down after a burst is sent.

You can play with this if you like, and using the GUI speed control might be best because of the 2.0.5.1 bug where upload speed controls download speed. There may be times you want a fast restore, and the cable modem probably does downloads faster anyway. You can try running Canary, but it can sometimes break, because that’s where the new features and fixes go, and sometimes bugs are introduced along with them.

I’d also suggest seeing if your router has any speed controls that can either slow Duplicati upload down or prioritize the network activities that have real-time bandwidth needs, such as your Zoom/Teams sessions.