Create an Upload Manager for OneDrive.
Most broadband providers concentrate on download speeds. For example my download speed is around 18Mbps, which is ok. My upload speed is only just 1Mbps. This could be an issue with my router, PC or software but. If there were an upload manager that broke any file into 10 sections and uploaded them at once , this would make a massive difference. My OneDrive is switched off most of the time as once it starts to sync or update everything using broadband virtually stops. I have yet to find a setting that can improve this performance.