Deco M4R(2.0) Wi-Fi throttle after update to latest firmware

Deco M4R(2.0) Wi-Fi throttle after update to latest firmware
Deco M4R(2.0) Wi-Fi throttle after update to latest firmware
2021-06-26 00:24:38 - last edited 2021-06-26 00:35:26
Model: Deco M4
Hardware Version: V2
Firmware Version: 1.5.0 Build 20210511 Rel. 34580

Hi All,

 

I recently updated to the latest firmware (1.5.0 Build 20210511 Rel. 34580) for my DECO M4. 

 

I have 300mbps internet speed from my ISP. After update, my Wi-Fi speed internet speed suddenly being throttle to 50mbps, but the speed is working fine on my wired-network PC.

 

Is there any reason why my Wi-Fi being throttled? is there any workaround for this? Need help. Everything was working just fine, until i updated the firmware.

 

thanks.

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#1
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9 Reply
Re:Deco M4R(2.0) Wi-Fi throttle after update to latest firmware
2021-06-28 11:22:42

@Zetsu 

 

Hi, after the firmware update, please reboot all the Deco M4 nodes by powering them off then on to confirm if the speed will be back to normal.


If it is not, please follow the guide here to check the settings on the network, especially the QoS settings:
[Troubleshooting] Slow Internet Speed with Deco Devices

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#2
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Re:Deco M4R(2.0) Wi-Fi throttle after update to latest firmware
2021-06-29 03:52:18

@TP-Link I have tried to reboot even reset the DECO devices. However the problem still exist. My wifi speed is being throtled, i can see the speed is throtled to 50mbps from 300mbps during the speed test.

 

 

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#3
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Re:Deco M4R(2.0) Wi-Fi throttle after update to latest firmware
2021-07-07 09:27:15

@Zetsu 

Hi,

Before the firmware upgrade, how much Wi-Fi speed you could get from the main Deco?

Would turning off the 2.4ghz on the Deco improve the speed?

Could you please help me run the following test so that we could forward your case to the senior engineers:

1. Power off the satellite Deco and only leave the main Deco;

2. turn off the 2.4ghz and leave the 5ghz only;

3. connect the mobile device and run the speed test—please send me a picture of the speed-test result;

4.check the link speed on this device- https://www.tp-link.com/support/faq/2265/  and send it to me(please also add the model number and operating system of this device)

Thank you and wait for your reply.

 

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Re:Deco M4R(2.0) Wi-Fi throttle after update to latest firmware
2021-07-07 11:00:54 - last edited 2021-07-07 11:03:24

@TP-Link 

 

Before the firmware upgrade, how much Wi-Fi speed you could get from the main Deco? if you talking about the internet speed through Wi-Fi = 300mbps

 

Would turning off the 2.4ghz on the Deco improve the speed? No, issue still same, the speed drop from 300 to 60mbps

 

Below the speed test result after following your test instructions :-

 

 

I have tested on other devices as well, same issue happens. Just to let you know its not the device issue.

 

It is my regret that i updated to the latest firmware that caused me all this trouble. Please fix this!

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Re:Deco M4R(2.0) Wi-Fi throttle after update to latest firmware
2021-07-08 01:16:05

@Zetsu 

Hi,

I would like to forward your case to the senior engineers and please have a check of your email address later.

By the way, since the link speed on the Galaxy S10+ is 468m/s(For Deco M4, it is up to 866m/s), could you please test one more device about the link speed as well as the final internet speed?

Sometimes the speed test server would also affect the speed, would it be possible to change a different server and test the speed again?

Thank you.

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#6
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Re:Deco M4R(2.0) Wi-Fi throttle after update to latest firmware
2021-07-14 06:06:16
im not sure how to detect wifi connection speed on iphone. But all other device multiple speedtest wifi to multiple servers produce the same end result. My wifi throttled to speed as mentioned previously. So what are the workaround for this? new fix firmeware? need to replace my deco? no solution so far
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Re:Deco M4R(2.0) Wi-Fi throttle after update to latest firmware
2021-07-14 06:49:07

@Zetsu 

Thanks for the update.

Did you get an email from TP-Link?

I have forwarded your case to the senior engineers for further assistance and please check for the update via email.

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#8
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Re:Deco M4R(2.0) Wi-Fi throttle after update to latest firmware
2021-07-23 09:50:27

Any advances or feedback on this? I have the M4R v1 (similar firmware) and I am still on v1.4.2 (works well for me, on wifi 5Ghz I reach the limit of 120Mbps of my ISP link) and will not upgrade without knowing if this is a general issue or not.

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Re:Deco M4R(2.0) Wi-Fi throttle after update to latest firmware
2021-09-11 20:43:33

@Zetsu on iphone use wifisweetspots

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