I have just purcheased a EAP225-Outdoor to extend my wifi network coverage externally. I found I was getting good signal coverage outside, however when running a wifi speedtest on my home network I was getting around 20Mbps when I should have been getting around 500Mbps on the 5g wifi. The 2.4g wifi was similarly slow.

I tried installing the latest firmware and doing a factory reset, but no luck in increasing the speed. Also tried different wifi channels, new network cables and a different POE injector. All had no effect.

Just as I was about to give up and return the unit to the retailer, I appear to have found the problem. Turning on Qos with default settings cures the slow speed (previously it was turned off). I have no idea why this would make such a difference but hope this will save someone else much frustration.

Can anyone explain why Qos makes such a difference? There were no other clients logged on to the EAP225 when I ran the tests, so I would not expect Qos to have any effect.