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Internet speeds only 1/10th of whats it should be

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Internet speeds only 1/10th of whats it should be

This thread has been locked for further replies. You can start a new thread to share your ideas or ask questions.
Internet speeds only 1/10th of whats it should be
Internet speeds only 1/10th of whats it should be
2025-06-06 05:27:35 - last edited 2025-07-04 09:52:07
Model: Deco X20-DSL   Deco X55  
Hardware Version:
Firmware Version:

I have a NBN1000 FTTP connection to my house so I should be getting speeds around 850-1000mbps but I seem locked at 100mbps. I did 1 speed test and it got to 850mbps but I can't seem to get it to work again.

 

I have a deco x20-dsl as the main modem and 2 deco x55 as mesh access points they are both wired in and have good cables connecting them.

 

I know the x20 is a bit old but it shouldn't be that much of an issue.

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#1
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1 Accepted Solution
Re:Internet speeds only 1/10th of whats it should be-Solution
2025-06-09 07:32:07 - last edited 2025-07-04 09:52:07

  @Madmonkey150 

Hi, welcome to the community.

Have you tried the suggestion of setting Deco X50 as the main Deco?

By the way, did you use to set Deco X20-DSL into "Wireless router" mode instead of "DSL router" mode?

 

It is also suggested to replace the Ethernet cable between the main Deco and the NBN connection box.

For more suggestions, please refer to Troubleshooting Slow Internet Speed with Deco Devices

 

Thank you very much.

Best regards.

▶Check What's Currently Going on With Deco ▶Deco Wi-Fi Heatmap ready for Test! ▶Deco X50/X55_V1.3_1.3.1 Introduced Channel Selection, WiFi Access Control and WireGuard VPN ▶Deco BE65_V2_1.3.0 Added DoH & DoT, Speed Limit and Internet Backup Try to leave a Message if urgent help is required.
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#3
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Re:Internet speeds only 1/10th of whats it should be
2025-06-06 20:57:06

  @Madmonkey150 Consider switching x20 <-> x55 and use one of the x55 as router, then retest...

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#2
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Re:Internet speeds only 1/10th of whats it should be-Solution
2025-06-09 07:32:07 - last edited 2025-07-04 09:52:07

  @Madmonkey150 

Hi, welcome to the community.

Have you tried the suggestion of setting Deco X50 as the main Deco?

By the way, did you use to set Deco X20-DSL into "Wireless router" mode instead of "DSL router" mode?

 

It is also suggested to replace the Ethernet cable between the main Deco and the NBN connection box.

For more suggestions, please refer to Troubleshooting Slow Internet Speed with Deco Devices

 

Thank you very much.

Best regards.

▶Check What's Currently Going on With Deco ▶Deco Wi-Fi Heatmap ready for Test! ▶Deco X50/X55_V1.3_1.3.1 Introduced Channel Selection, WiFi Access Control and WireGuard VPN ▶Deco BE65_V2_1.3.0 Added DoH & DoT, Speed Limit and Internet Backup Try to leave a Message if urgent help is required.
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#3
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Re:Internet speeds only 1/10th of whats it should be
2025-07-25 17:20:03

If you only hit full speed once, it might be a negotiation issue—double-check the ethernet ports  fm whatsapp download and cables are all running at gigabit and not falling back to 100 Mbps.

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#4
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