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[Troubleshooting] Slow WiFi speeds over 5Ghz and AX networks with Deco Link X90

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[Troubleshooting] Slow WiFi speeds over 5Ghz and AX networks with Deco Link X90

This thread has been locked for further replies. You can start a new thread to share your ideas or ask questions.
[Troubleshooting] Slow WiFi speeds over 5Ghz and AX networks with Deco Link X90
[Troubleshooting] Slow WiFi speeds over 5Ghz and AX networks with Deco Link X90
2021-05-13 00:01:11
Model: Deco X90  
Hardware Version: V1
Firmware Version: 1.0.5

Hello,

 

I recently purchased the Deco X90 twin pack and I am experiencing unusually slow Wifi speeds on the main and satellite X90 nodes. I'm using Ting Fiber internet, and have confirmed 750~950Mb/s connected directly to the ONT, or to the 1Gb/s port on main X90 node.

 

Even when using a Dell 7490 with an AX200 WiFi6 card wih Windows 10 x64, speed tests from any vendor cap at 420Mb/s down, and 80Mb/s up. I confirmed from Windows I am connected at 5Ghz on channel 40, 1361/613 (Mbps) R/T Link speed. which of the two nodes I connect to does not matter, nor does how close I get.

 

I get similar if identical speeds with 802.11AC devices including two other laptops and a Google Pixel 3XL. I could understand AC speeds being slower, but not this slow.

 

The X90 units are using the Wifi Backhaul to connect to each other. I got similar speeds when only setting up the first node, too. All default settings as well.

 

Is this working as expected? Am I missing something? Let me know what other information I could provide. I really like the range and setup of these, I just want to get the speeds I should.

 

Thanks,

 

Gregory

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#1
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Re:[Troubleshooting] Slow WiFi speeds over 5Ghz and AX networks with Deco Link X90
2021-05-13 03:27:55

@gstrain1 

Hi, Could you please help me get the following information so that I could forward your case to the senior engineers directly;

1. the speed test result on the Dell 7490 laptop with an AX200 WiFi6;

2. the information of your PC’s network adapter from here: (For Windows PC only)

--Press WIN+R on the keyboard, type in “cmd” and enter, you will see a small black window.

--In the small black window, type in “ipconfig /all” and press enter, the information of your network adapters will be printed.

--Please copy the whole content of this window while contacting us, this information would be more helpful when troubleshooting this issue.

 

At the same time, please confirm the following settings：

1.Please remove QoS settings: Deco APP>>>QoS>>>(Set Application priority to Standard, Remove all high priority devices, set the Bandwidth to 1000Mbps upload and 1000Mbps download)

Thank you very much.

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#2
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Re:[Troubleshooting] Slow WiFi speeds over 5Ghz and AX networks with Deco Link X90
2021-05-13 13:54:40

@TP-Link 

 

I've included the needed information below via screenshot.

 

Regarding the QoS Settings, those are under the Homeshield section of v2.7.9. QoS is enabled with speeds set to 1000Mb/s Up and down with no high priority devices added. Disabling QoS has no effect on speed.

 

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#3
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Re:[Troubleshooting] Slow WiFi speeds over 5Ghz and AX networks with Deco Link X90
2021-05-14 06:05:35

@gstrain1 

Thanks so much for sharing all the detailed info, this issue you are experiencing sounds unusual/abnormal. To address the issue and try to fix it, we would like to have a specialist look into this further via email. Please check your mailbox later, and let us know if the issue is resolved.

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