Thanks Binhex!
I actually did try this previously and it didn't seem to make a difference. But now it does. I guess stopping and restarting the docker is needed to apply this change.
Full speeds now - and confirmed IP is linked to the VPN. Thanks for your help and great work!
Just wanted to jump on the wagon with Postinox's point. I just signed up for Mullvad and can't get any speeds past 1.2MB/s. Originally tried Wireguard - and just now tried OpenVPN and it's the same deal. Port forwarded as well. Settings match Postinox.
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