• Server is just

    iperf3 -s
    

    client is

    iperf3 -c 192.168.xxx -t 60
    

    Connects to ubiquiti gear via 5GHz.

    Interestingly I ran it again just now and the results were more what I expected (~ 200MBps). Not entirely sure what has changed but I guess that's one of the issues with wi-fi.

  • It looks as though we're having similar problems.

    I get 950Mbps over ethernet LAN / VLAN, across various switches.

    As soon as I connect over wi-fi, though, which is supposed to be Gigabit, my speeds drop to 30Mbps.

    I'm buggered if I know why.

    It's not signal attenuation, as I am in arm's reach of the AP.

  • Any other APs on interfering channels in the area?

  • Are you sure the wi-fi is meant to be gigabit and that's not referring to the ethernet ports. Gigabit speed wi-fi seems optimistic.

    One issue I found was lots of laptops defaulted to 2.4GHz connection which was considerably slower.

  • Signal interference would be my guess.

    Could be as simple as "do you have multiple APs and did you manually set them to the same channel?" if so they're probably interfering.

    Likewise if you manually set the power of the AP.

    As much as possible, let the AP scan and auto set the channel and power.

    But... just never expect to get the full WiFi speed, if speed is important add a cable. Also be careful to get the units right when comparing things, everything in networking is bps but I see tools sometimes mix in MB/s (Windows does this in places!).

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