Slow performance with AX200 & AX210 on Windows 11 22H2

[bambi-is-evil]

Hi all,

I have the problem, that with update to Windows 11 Pro 22H2 the Wifi performance goes down. I have a Lenovo Thinkpad T14s (AMD) with Intel AX200 on a Router "Telekom Speedport Smart 4". The connection syncs great at 2,4Gbit/s. But performance via SMB is just ~500Mbit/s.

I tried a few test scenarios:

- New install with Windows 10 21H2 & 22H2 and Windows 11 21H2 do not have the problem: performance via SMB is at 980Mbit/s

- After upgrade installation of Win 11 22H2 problem is there

- After fresh installation of Win 11 22H2 problem is there

- Different driver versions (Windows, Notebook manufacturer, Intel) do not solve the problem

- Robocopy and xcopy do not solve the problem (~ 500Mbit/s)

- Different router "AVM Fritz!Box 7590AX" does not solve the problem

- Different notebook "Asus Zenbook 14 (AMD) with Intel AX200" does not solve the problem

- Update to AX210 does not solve the problem

At the end it is very easy to re-create the issue. Really wondering why I do not find anything about it. Now I'm running out of ideas. Does anyone of you have a solution?

P.S.: Sorry for my bad english.

[n_scott_pearson]

I suggest that you do a clean install of the Wireless and Bluetooth driver packages. Here is the proper process: 

1. If you haven't already, download - but do not install just yet - the desired Bluetooth and Wireless driver packages for your adapter. Here are the current links for downloading these drivers: Wireless: https://www.intel.com/content/www/us/en/download/19351 and Bluetooth: https://www.intel.com/content/www/us/en/download/18649
2. Disable Internet access. Unplug Ethernet cable and/or disable wireless. Keep disabled until told to re-enable.
3. From the Apps & Features applet, check for instances of Intel PROSet/Wireless Software and Intel Wireless Bluetooth. If none, skip to Step 6.
4. Uninstall each instance of Intel PROSet/Wireless Software and/or Intel Wireless Bluetooth that is present. When prompted, choose to "Discard Settings".
5. Manually reboot your computer, keeping Internet access disabled throughout.
6. From the Device Manager applet, check the Network Adapters section for an entry for Intel Wi-Fi 6 AX200 and check the Bluetooth section for an entry for Intel Wireless Bluetooth that has an intel driver associated with it. If neither is the case, go to Step 10.
7. Right click on the entry for Intel Wi-Fi 6 AX200 and uninstall it, choosing to (checkmark) Delete the driver software for this device.
8. Right click on the entry for Intel Wireless Bluetooth and open its properties. If it has an Intel driver associated with it, then uninstall it, choosing to (checkmark) Delete the driver software for this device.
9. Go to Step 5.
10. (Optional but recommended) Clean out all temporary files using the Windows Clean Disk tool. Ensure you have enabled cleaning of System Files. I recommend that you then checkmark all categories offered, even if no files currently in this category (so it leaves it set up for next invocation).
11. (Optional but recommended) Clear each of your browsers' cache.
12. Install the downloaded Bluetooth driver package (my rule: always install Bluetooth first).
13. Install the downloaded Wireless driver package.
14. Manually shutdown and reboot your computer.
15. Reenable Internet access. Restore Ethernet cable and/or reenable wireless.
16. Test.

Hope this helps,

...S

[bambi-is-evil]

Hi Scott,

I tried again with your process, but without success. Unfortunately it doesn't even work with fresh Win 11 22H2 installations. With all other versions than 22H2 I have no problems. I really tested a few days and reinstalled the notebook a few times to be clear on the re-creation of the issue.

[n_scott_pearson]

Ok, this is going beyond me. Intel Customer Support will need to decide what to do next...

...S

[Hugo_Intel]

Hello bambi-is-evil

Thank you for posting on the Intel Communities. I am sorry to hear that you are experiencing slow wifi on your system. 

If I may jump into the conversation, I would like you to let me know the following information: 

1.-Does the issue happen on different networks? 

2.-By any chance, have you tested any system that does not include an Intel Wireless adapter? 

3.-What steps do you take to reproduce your issue? 

4.-Is the issue exclusive to SMB? 

5.-Please run the Intel® System Support Utility and attach the log file. 

Best Regards,  

Hugo O. 

Intel Customer Support Technician.

[bambi-is-evil]

Dear Hugo,

thanks for your help. I will answer your questions as good as possible:

1) I would say yes, because I changed the router for testing. Unfortunately I do not have a complete different network with Gbit NAS for testing.

2) I only have Intel adapters for WIFI6, sorry.

3) Download a file from local NAS via SMB on Windows 11 22H2, that's it. NAS also runs on Windows 11 22H2 attached via LAN.

4) Yes. Via FTP for example it runs with full Gbit.

I already posted this issue in November on Microsoft forums without any outcome till now. I don't think, that it is only a SMB issue, because there is no problem via LAN adapter. It only happens with WIFI on Windows 11 22H2.

Regards

[Hugo_Intel]

Hello bambi-is-evil

Thank you for the information provided.  

I will proceed to check the issue internally and post back soon with more details.  

Best regards,  

Hugo O.  

Intel Customer Support Technician.

[Hugo_Intel]

Hello bambi-is-evil

After reviewing this case we have concluded that since the issue only happens on version 22H2 of Windows 11 and all of your other connections and protocols work fine the best next steps will be to continue working with Microsoft as it will most likely be an Operating System issue. We appreciate you also reporting this issue to us.

Please keep in mind that this thread will no longer be monitored by Intel. I appreciate your understanding. 

Best Regard,

Hugo O.

Intel Customer Support Technician.

[bambi-is-evil]

Hi Hugo,

I think it's sure a Operating System issue with Win 11 22H2, that makes your products perform bad. At least I reported it to Microsoft severeal times since 3 month on Feedback Hub and their forum without any useful reply. Obviously end customers do not have a lobby at Microsoft?! I hoped for your support in solve this problem through your account to Microsoft. Looks like just no one cares at the end...

Regards

[bambi-is-evil]

KB5022914 solves the problem. Thanks for your great support!