@Liverpool20 Do you mean the speed is high when you set the 5G mode on the AX73 to 802.11a/n/ac mixed (without ax)? And the speed is low when you choose 802.11a/n/ac/ax mixed? (Yes)

My device is OnePlus 9 Pro. Wi-Fi 6 support. But if I leave the option as AX in the settings. Internet speed will be very low. I change it to AC it will be very high. Please help me what is the...