Slower speeds after upgrade

[tsuki]

I just updated to OPNsense 21.1. Performance through the firewall as shown by the usual speedtest sites has dropped significantly. I used to get 800-900 MBps. I'm now getting 500-600 MBps.

Any suggestions as to tunables I might experiment with to get performance back up?

[tsuki]

Speedtest on 20.7 917/930 Mbps
Speedtest on 21.1 508/564 Mbps

I've rolled back to 20.7. I don't have any ideas as to why the drop in performance.