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Forum Discussion

TSTIT's avatar
TSTIT
Aspirant
Jun 30, 2020

Intel AX200/AX201 devices cause ALL 5ghz clients to stop communicating on R6900P

Hi,   I've been struggling with this issue for several months and I've tried everything I can.  I work for a large tech company and very network savvy and I've done everything I can to solve this o...
kf81's avatar
kf81
Tutor
Oct 15, 2020
Disabling mimo on the router cleared up the issue.
capnron5177's avatar
capnron5177
Aspirant
Oct 23, 2020

Thanks for the suggestion to disable the MU-MIMO, that fixed the issue for me while able to keep my PC's bandwidth at 5G. 

 

Even with the latest Intel AX200 driver installed just now (22.0.0.6, 9/17/2020), the issue still persists when the set to dual band or only at 5GHz a.

So, for my experience, it's either set my PC's Wifi to 2.4GHz or disable MU-MIMO. 

 

What would I miss without MIMO? I do have other PCs and devices, I have yet to experience lag even with the household streaming all at the same time.

    • avtella's avatar
      avtella
      Prodigy
      Oct 25, 2020

      You can disable MU-MIMO if it's causing issues, with minimal performance real world effect, SmallNetbuilder has more in depth tests. It works best on Qualcomm based routers in my experience where there is a consistent noticable gain, on Broadcom based ones however not so much and in some instances on BCM chipsets it can actually make performance worse from what I saw in tests. Some Broadcom WiFi clients like the Galaxy S6/S7 would even drop to like single antenna mode with MU. Intel and Qualcomm devices do it well, but even then its most effective when devices are a decent distance apart.

      • avtella's avatar
        avtella
        Prodigy
        Oct 25, 2020

        I wouldn't be surprised if it's more of the router side issue, I have MU capable Intel AX200/9260/8265AC WiFi chipsets in my 5 home laptps and have not had any issues with my old R7800 or even the current RAX120 both which are Qualcomm based. I usually reccomend it MU off on BCM AC routers regardless of brand, newer AX BCM models seem fine. Also make sure you have the latest WiFi drivers from Intel's site, just in case.