I reduced already the TX power of 2.4Ghz to -4dB, screenshot settings attached.
What else do you suggest ?
Instead of adjusting the TX Power, have you tried enabling 802.11k for the WLAN and setting a low 2.4GHz percentage in Services, Radio Control and Band Balancing? That said, you might also get better performance if you do not limit the radio to three channels.
thanks for your reply ,
at the moment, the firmware installed is 22.214.171.124.228 and these are my settings
1 the band balancing at the moment is set to 10% shall I drop to 2% ?
2 do I need also enable the "band balancing" in the WLAN to make the 1 option working ?
is the anything else I can do ?
Any change in behavior on recent firmware?
How many APs do you have running Unleashed 200.3 code? If 3 or more, your network shouldchoose which 2.4 and 5GHz channels to use. Because 2.4GHz goes thru walls and around otherthings better, your devices (who make the decision) may be choosing the strongest signal, and ithappens it on your 2.4GHz band.
If you reboot the AP they prefer, or turn it off temporarily, which other AP(s) do your clients choose,and can you see any difference in throughput? This is what I'm thinking...
You might also need to check on the Smart Roam for the sticky client issue. Check out the below link.