Troubleshooting Slow Internet Speed with Deco Devices
When you find the internet speed from Deco is below expected, please refer to steps below to locate the problem and troubleshoot according to the corresponding suggestions.
Notifications before we run the speed test:
1. Please make sure Deco, Ethernet cables and the testing PC are all 1Gbps (Gigabit) supported, not to mention the broadband connection. For example, Deco E3/E4/W2400 are fast Ethernet ports(10/100m/s).
2. Most of the time, the speed from satellite Deco nodes are less than main Deco, especially when they are not using Ethernet backhaul.
3. If you are using a wireless device to test speed, make sure the wireless device is 5Ghz supported and capable of reaching high speed. Some old laptop's Wireless Network Adapter is not able to reach high speed.(Please Turn off the low power mode if you are testing speed over iPhone)
Methods and Steps to verify speed:
1. Use Ookla Speedtest App or https://www.speedtest.net to measure Internet speed. The speedtest on the Deco APP is only for reference.
2. Verify maximum broadband speed by connecting a Gigabyte PC directly into the ISP Modem first;
3. Verify wired speed into the Main Deco after verifying the ISP Modem's maximum speed;
4. Disconnecting every wireless device if you are trying to measure the maximum wireless speed of Deco units;
5. Always reconnect Wi-Fi on your cellphones/laptops every time you perform a speedtest.
Possible Solutions:
1. Remove QoS settings: Deco APP>>>HomeCare or HomeShield>>>Turn off QoS Completely or remove all priority devices and set the max bandwidth at 1000Mbps or higher.
2. Turn off the UPNP and SIP ALG in the Deco app: Deco APP>More>Advanced>UPNP/SIP ALG;
3. Try a few other speedtest servers because some specific servers cannot reach full speed at wireless.
Related Articles: Troubleshooting: Slow Internet Speed with Deco Devices
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Concerning the maximum bandwidth I will have the optical fiber next week
For the hp pavillon dm4 i bought a TP-Link Archer T2U Nano and it's now connected between 280, 355, 433 Mbits )
The speed rate keep changing but the pc and the xc 60 stay at the same place, is it normal?
Anyway, stay focus on the major issue:
Why does the X60 "crashes" and have a very slow rate on every device (even the mobile phones) and need a reboot to work properly again?
Thank you
Stéphane
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Hi, Sorry for the delay.
Since Deco X20 is up to 802.11ax, while HP Pavillon dm4 (broadcom 802.11n) and Netgear WNA1000M N150 is up to 80.11n, the gap between old and the latest Wi-Fi technology might cause the vibration of the link speed;
When rebooting the Deco X60, it would fresh the CPU usage and clear the redundant date which is quite similar to rebooting the computer when it is quite sluggish;
Thank you.
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@TP-Link so what should i do?
I don't want to reboot the X60 every 2 hours
Don't forget that the issue occurs on all the devices that are connected.
Thanks for your help
Stéphane
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I have been through this loop many times with all kinds of proposed solutions, submission of topology and hours of to-ing and fro-ing with the Deco folks. It turned out that the issues weren't with Deco but were with Speedtest.net!!
Before chasing Deco try selecting various Speedtest servers to find the one that works best. I have a 500mb connection and some of the tests were only showing 75mb. I finally found one that showed the true speed and I have had no problems since. Your issues could be as simple as that.
You can test your connection within the Deco at the router and this should tell you whether the connection has been configured correctly as WiFi is not part of the test.
Of course you may have a genuine network issue but I urge you to eliminate the Speedtest vagaries first.
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Model: Deco E4R
Firmware: 1.5.1 Rel 64251
I have same problem.
While diagnosis to slow speed, I found sometimes latency (ping to Router) increased to abnormally high and found 'Request time-out' also.
I tried with different settings but no luck.
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I have a x90 dual setup with some issues.
however since upgrading from the m5 huge number of app options have been removed.
this includes the qos settings.
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Hi, I did not get any update from your side:
https://community.tp-link.com/en/home/forum/topic/271178
Were you still having the same issue?
Thank you.
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Hi! I have been having with my Deco M4. I have two and I have been using it for roughly 2 months now and one of them gives an unstable connection. Connection always drops, and even if it's connected, it has a very low speed. It's really frustrating. I know for a fact that ITS NOT MY ISP, since the other one works fine, and I also tried my 2 Decos with another ISP and I am getting the same problem. I have tried all the possible troubleshooting steps I know, even reset device 3x now and nothing happens, the problem still persists.
I also have been trying to call the number on your website and NO ONE ANSWERS! Not even a voice prompt! Your live chat support is also frustrating, not getting help from that!
The troubleshooting steps you provided in this link: https://www.tp-link.com/ph/support/faq/1454/ IS NOT GOOD! DOESN'T HELP AT ALL!
1.The results of the above troubleshooting steps: The troubleshooting steps you provided in this link: https://www.tp-link.com/ph/support/faq/1454/ IS NOT GOOD! DOESN'T HELP AT ALL!
2.The LED status on Deco units: SOLID WHITE
3.How often did this issue happen?: CONSISTENT FOR 4 DAYS NOW
4.How to recover the connection?: NONE! NOTHING WORKS, STAYS UNSTABLE NO MATTER TROUBLESHOOTING I TRY
5.TP-Link ID (email account):
6.The model number of your modem and Deco: Deco M4R(US) Ver: 2.0
7. Firmware: 1.1.8 Build 20191102 Rel. 58333
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Hi, your current firmware is 1.1.8 which is an ISP-customized firmware in Philippine.
Now, the latest firmware for Deco M4 is 1.5.0, or 1.4.3 in some places, have you ever asked the service provider to update the firmware for you?
By the way, since you mentioned that the other one worked ok, so the instability and slow speed issues only existed on the satellite Deco, the main unit was good?
Thank you very much.
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