Nextcloud WebDAV is transfers slow compared to the sync client

Has anyone else experienced this? I mean, not just the latency of navigating folders (which I understand since it’s a network folder) but I just tried uploading a small-ish folder (60MiB) and the upload rate was 300bits per second!

The server is on my local network so I know this isn’t a connection speed issue. I installed the nextcloud client out of curiosity, and that had more acceptable speeds.

Is this a nextcloud issue? I’ve seen a few tickets open on their github over this but it seems to be relatively quiet.