Very slow download speeds from exit node

[lucatk]

Using the fly exit node from my Mac (or any other device), I am seeing very slow (<1 mbit/s) download speeds.
Upload speeds however are perfectly normal.
iperf3 between the fly VM (exit node) and my Mac confirms this.

I have tried various troubleshooting steps, direct connection with a v4 ip allocated, a v6 ip allocated, nothing allocated via DERP.
same results in each instance.