3

I'm having a very slow connection with only 60Mbit-90Mbit in 5Ghz WiFi 6

  1. WiFi Card killer 1650 (ax 200) chipset
  2. TP-link AX23 (put next to my pc)
  3. Windows OS

I have tried to test speed with iperf3 with other devices with conclusion other devices iperf to each other could hit 600mbit easily but not to my PC with killer 1650

  1. Macbook air
  2. lenovo thinkpad
  3. Matepad huawei 10.4

things i have done

  1. Install dual boot Ubuntu 22 and works charm, get speed as expected but when back to windows 10 is slow
  2. update BIOS for asrock b450 pro4: nothing changed
  3. reinstall windows 10 to windows 11, nothing changed
  4. install older driver: nothing changed

so i am getting frustrated because TP LINK AX23 mention could hit 1200 Mbits/s with wifi6

here are pictures enter image description here enter image description here

any ideas on this?

david valentino
  • 81

3 Answers3

1

You can try a few things. First try to disable autotuning via the command line;

netsh int tcp set global autotuninglevel=disabled

Second (this happened to me on a bad cable on ethernet on a MacBook, but might also happen on WiFi and Windows) is that the interace unfairly gets downgraded to 100baseTX. You want to look this up in your adapter settings via de device manager and see if you can manually force it to 1000baseT (1Gbit) and Full Duplex, because your test clearly shows a 100Mbit upper limit. In my case it was even stranger, because mine was bouncing randomly between 100~250Mbit.

Sorry for not showing more details with paths and images, since I currently don't have a Windows device present to share the exact steps.

I hope it helps or sets you on the right path!

Edit; I found this image online for which I was referring to, but it shows 100Mbps in the image. Here choose 1.0Gbit or 1000Mbps (Full Duplex) (depending on the interface settings). It's not relevant that this is ethernet. It should be the same for WiFi interfaces;

enter image description here

Fëanorson
  • 175
1

I had this on my Windows 11 machine with my Wi-Fi network card and HyperV network card which was set behind.

Fixed this by disabling - Large Send Offload (LSO) within HyperV network card

Steps:

1 - Open Control Panel

2 - Go to "Network and Sharing Center" > "Change adapter settings"

3 - Right-click your network connection and select "Properties"

4 - Click "Configure" next to your network adapter

5 - Go to the "Advanced" tab and set "Large Send Offload v2 (IPv4)" and "Large Send Offload v2 (IPv6)" to "Disabled"

Sergey Barkovskiy
  • 11
-1

The post Very slow download speeds with intel wifi 6 ax200 treats the question.

One answer suggests using an older driver, mentioning specifically version 21.80.2 as the last version which worked correctly. All later version (according to the answer) have this problem.

Another answer in this post recommends doing :

netsh int tcp set global autotuninglevel=normal.
harrymc
  • 498,455