I have completely UNINSTALLED IDS/IPS and QOS and Bandwidth Manager...after which I rebooted.

I re-ran iperf3 tests over the WAN interface, same garbage inbound performance.

In the below tests, the iperf3 server system is connected to the same gigabit switch as the ClearOS WAN port





So I can send to the iperf3 server at near wire speed and back at less than 10% of that speed.

QOS/BandwithMgr and IDS/IPS are totally uninstalled and the ClearOS box rebooted. No Proxy. WHY IS THIS SO SLOW?