Hey @Sunshine, thanks for jumping on this.

I have indeed changed the WiFi channel and width using an analyzer to find the cleanest channels. I've tried multiple and all have the same performance.

ISP: Community Fibre (1Gbit)

Wired speed: 920Mbps

2.4G speed: ~80Mbps

5G speed: ~770Mbps

Number of devices: ~10 [PC, Laptops, phones, couple IoT devices]

Associated speed 2.4G: 542Mbps (full signal)

The 2.4G speed makes no sense as it was working perfectly fine before the updated firmware and I have changed nothing with regard to devices etc.

I appreciate your help, thanks!

  @dephreq I have the exact same issue. Latest firmware made wifi terribly slow. This is a TP link issue. TP link - please help.

  @Doug_H Also - FYI, after disabling Smart connect on my Archer AX6000, after the latest firmware update, now on 2.4 G only wifi works. When coupled with smart connect speeds are painfully slow. This happened after updating to latest firmware yesterday.

@Sunshine Any updates on this?

  @Sunshine Highly appreciated, I've received the email and responded.

  @Sunshine 

Sorry for the late reply… I also have a very bad performance after updating the firmware as you can see from my own monitoring (image is downlink; uplink is ok and no image is provided. you won't see any difference before/after Nov, 8th with uplink - the date when I updated the firmware):

Firmware: 1.3.2 Build 20230906 rel.52143(4555)

Hardware: Archer AX6000 v1.0

There's no change with QoS en/disabled.

I don'd use "Smart Connect" - there's a SSID for 2,4 GHz and another SSID for 5 GHz WiFi.

Transmit Power is high for both WiFi.

Channel Width is 40/160 MHz for 2,4/5 GHz.

Channel is Auto/36 for 2,4/5 GHz.

Mode is mixed-everything for both WiFi.

MU.MIMO is enabled.

iperf3 within the same SSID from Macbook (WiFi) to Linux Desktop (1GBit-wired) is really fast when both devices are "on the same BSSID: 700, 800 Mbit and more.

There's also a TP-RE700X Range Extender (with EasyMesh enabled) with a current Link Speed at my AX6000: 412Mbps (2.4GHz) 648Mbps (5GHz) (every time I check this both values are around/in this range!):

Firmware: 1.1.4 Build 20230509 Rel. 78185

Hardware: RE700X v1.0

IPS is 1000 Mbit Down and 50 MBit Up.