Slower Ethernet than WiFi

Slower Ethernet than WiFi

Slower Ethernet than WiFi
Slower Ethernet than WiFi
2024-07-31 11:46:53 - last edited 2024-08-01 07:14:22
Model: Deco X20  
Hardware Version: V3
Firmware Version: 1.18 Build 20240119 Rel. 37701

Hi all,

 

Recently I suddenly encountered that I was getting severely throttled download speeds on my PC, when previously I had no issue. For reference, I have a 1000mbps download speed package, and suddenly could not crack 100. Side note ping and jitter are not significantly affected, and when first starting the test it tries to go over 200 then quickly back down to 80-90, its like someone is throttling the valve.

 

Immediately I thought it was the cable running from the ethernet port into my PC, maybe damaged or something like that. But quickly I ruled that out, as well as other ethernet cables having tried replacing them all with new ones. I then turned to my ISP, but noticed that devices on WiFi are still receiving the speeds they were originally (about 400 mbps down 45 up on iPhone 15 and laptop).

 

I tried 2 different laptops via ethernet (one with a throughput speed of 1500mbps and another with 1000), and I am still unable to crack 100 down. 

 

I have replaced the primary deco with each one, and set up an entirely new network twice, and I am still encountering the same speed issue, on Ethernet only, with all different ethernet cables. 

 

New note after this intensive testing I am now encountering relatively frequent WiFi network dropouts as well that last about a minute.

 

Using NBN in Australia, where the Deco is connected via ethernet to the NBN box, which acts as a router in this case. 

 

To recap, this only became an issue recently in the past few weeks maybe a month, before this the connection and stability of Wifi etc were flawless, and I was able to get 900 down via ethernet to my desktop PC.

 

Does anyone have any idea what in Deco settings could be causing this? Could it have been a firmware update that has borked wired connections specifically?

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Re:Slower Ethernet than WiFi
2024-07-31 11:48:09

Side note I have no idea what the software version is, just selected V20 since its the most recent and I always update when it asks.. Firmware version is def correct can see that in app.

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Re:Slower Ethernet than WiFi
2024-08-01 08:11:26

  @Lennmate 

Hi, Thank you very much for the feedback.

Your hardware version of Deco X20 should be V3.

Can I have a picture of your network topology, such as:

Have you tried to connect the desktop to one of the satellite Deco X20 to see whether its Ethernet speed could reach over 100mbps?

Could you please also refer to this link to help me check the Ethernet link speed when the desktop was capped at 100mbps?

How to check the associated/link speed on a wired client

 

Wait for your reply and best regards.

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