Hi Joseph,
Thanks for your help and it's so amazing for me. Due to after i unchecked "client-aware" and set "drop broadcast ..." following your advice, channel utilization it look better. But i'm not sure it's better from which one between client-aware or drop broadcast... .
And one thing that i see is under Dashboard > Access point > Channel Utilization > .., we will see tab colour that show TX , RX and Interference and by attachment file name "channelbusy3" , you will see a lot of tab colour red of interference. So what should be the causes of this interference and how can i decrease it?
Thanks ..