Hi, I was using Archer c80 ac1800 and switched to TP Link BE230 BE3600, Here wifi supports OFDMA as long as MU-MIMO but still facing high ping issue in my iphone 14 pro and iphone 12 both of the devices and the mazor issue it when i am trying to priortise these devices by QoS, just after enabling the QoS speed drastically gests down and ping for the upload ans download gets too too high like before QoS if ping is 8,9 after QoS it reaches 120-200, and i tried it almost 20th time in past 3-4 days always result is same with another devices too. Feel like there is some problem with QoS, it happen same if i am assigning any permanent IP to any of my device.

if there is any resolution please let me know, i was way happy with my old Archer C80 Ac1800.