Archer AX90 Tri-Band Wi-Fi 6 Router slows to half ISP speed
Model: Archer AX90
Firmware Version:
1.1.8 Build 20220321 rel.13967(4555)
Hardware Version: Archer AX90 v1.0/v1.20
I have Comcast with my ISP --> 900 Mbit/s service (fibre channel)
CLIENT
Model: Dell Precission 3561
PROBLEM
AX wifi download speeds is slow for this equipment with this price !!!
845 Mbps down - plugged directly to the router
430 Mbps - 5GHz-2 - client speed next to router
I WANT TO SOLVE the 5GHz-2 (ax only) download speed issue. The Archer AX90 Tri-Band Wi-Fi 6 is NOT performing as advertised.
TP Link configuration
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Disable QoS.
Change the Channel Width for the 5GHz-2 band to 160 Mhz and test:
You may check this story for additional details on 160Mhz channel width setting.
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Hello @terziyski
I run some test, changed the the channel width to 160MHz for 5GHz-2. The result is higher a bit but still not enough. Please see the pic below:
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To avoid any other conditions that are limiting your bandwidth - disable QoS on your AX90.
Here's your bottleneck according to the screenshots you posted:
If your Dell Precision 3561 wireless adapter is Intel Wi-Fi 6 AX201, you should be able to achieve 1200mbps on the screenshot above ( 5 GHz-2: 1201 Mbps (802.11ax) )
If you try the same with 5 GHz-1 band which is 4804 Mbps (802.11ax, HE160), you should be able to achieve full ISP speeds.
Here are the AX90 technical specs:
Since the nature of the wireless ethernet connection is half-duplex, you won't be able to utilize your full ISP speed on 5 GHz-2 band.
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The QoS was switched off after you advised me it some time ago. How can I limit only to 5GHz-1 channel? How can I be connected only to 5GHz-1 with one device? Should I switch off the 5GHz-2?
Many thanks
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It's easy actually - just use different SSIDs for different wireless bands. Thus you'll know to which wireless band of your AX90 you're connected at any time.
When you need a wireless client device to use your full wireless radio bandwidth connect it to the 5GHz-1 band SSID. If a wireless client device is not so bandwidth demanding, you can connect it to 5GHz-2 band SSID, to offload the 5GHz-1 band.
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