@David-TP Thanks David! It seems no difference if I set QoS, I might give a try later today. DL speed for both device are normal (say >1400Mbps, even on 5Ghz channel) While that AX211 has some...

Hi There! I have a setup of 4x Deco BE85 (Main + 2 x wired + 1 x wireless) and experienced abnormal wifi upload speed on selective device, some of my device could reach normal wifi upload speed while...