The root-cause may be that you have locked client devices to the 5Ghz radio when they really need to use the 2.4Ghz radio sometimes, like on rainy days.
Possibly consider to put the boggy devices onto the 2.4Ghz not the 5Ghz, as a test ?
Also consider to let the clients decide which radio to use, 2.4Ghz or 5Ghz, as another test?
Your router/wifi/hub thang may provide visibility into TX/RX error counters per client to give you an idea if you are trying to get too much distance out of 5Ghz vis-a-vis these tests or your baseline setup.
The root-cause may be that you have locked client devices to the 5Ghz radio when they really need to use the 2.4Ghz radio sometimes, like on rainy days.
Possibly consider to put the boggy devices onto the 2.4Ghz not the 5Ghz, as a test ?
Also consider to let the clients decide which radio to use, 2.4Ghz or 5Ghz, as another test?
Your router/wifi/hub thang may provide visibility into TX/RX error counters per client to give you an idea if you are trying to get too much distance out of 5Ghz vis-a-vis these tests or your baseline setup.