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I run a single ssid dual band network ... what tends to happen is 5Ghz is effectively ignored. 2.4Ghz has better coverage, so everything wants to live there. At least wifi 6 brought improved encoding to 2.4Ghz.

I haven't had luck with the roaming extensions; when I run them, some of my devices won't connect or won't stay connected and it's a pain to monitor. I guess I could run a different SSID with roaming enhancement, but effort.

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This used to be pretty common on at least Linux and Android clients some years ago.

Not sure if they finally got around to making the BSSID selection algorithm a bit smarter or whether all my access points just support active steering at this point, but I haven't seen this in the past couple of years.

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You can turn down the power on the 2.4GHz radio so it's not as overpowering.
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I do, but I can only turn it down so much or I lose outdoor coverage.
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I _am_ broadcasting a second SSID, in case that was not obvious from the text... I just don't want there to be 3.
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