@rtrevino how about updating the wireless adapter of the Mac device?

Hi @rtrevino,

A couple things to look at:

1) "My transimt powers are set to low and i have specified 3 different 5ghz channels on this floor. 157,161,149"

Are you using 80 MHz BW on 5.8GHz?  If so, there are only two non-overlapping channels in the USA.  36 & 149.  You've selected 3 channels that will conflict / overlap unless you are using 20MHz BW.

For 2.4GHz us 20MHz only, for 5.8GHz try either 40MHz or 80MHz only.  Your ability to use 80MHz will depend on whether AP1 can see AP3, for example (the two that are farthest apart would be set on the same channel).

2) Are the AP's ceiling mounted?  ideally the AP would be installed above the Mac PC.

3) Use the custom scale to set the powers.  You can try the "low" equivalent, but I've found this can be a bit, too low.

4) Many Apple products notoriously struggle with band steering and OSX lacks fast roaming.  Create a separate 5.8GHz only SSID to join your Apple products to. 
 

5) Update your network card drivers if possible.  Check the adapter properties.  There may be a "roaming aggressiveness" setting.

I have an Xbox that stupidly connects to the wrong AP all the time -- my other 45 Wifi clients work great -- I finally just gave up and hardwired it.

-Jonathan

@R1D2 1 user has macOS catalina 10.15.4

the other one has macOS el capitan 10.11.6

@R1D2

Thnks, I will give this a try!!