Deco M9 Poor Wifi Speed

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Deco M9 Poor Wifi Speed

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Deco M9 Poor Wifi Speed
Deco M9 Poor Wifi Speed
2022-11-21 21:47:58 - last edited 2022-11-21 21:49:09
Model: Deco M9 Plus  
Hardware Version: V2
Firmware Version: 1.5.6 Build 20211018 Rel 35617

I've recently had FFTP installed with Truespeed providing 600mbps up and down.

 

The Truespeed WiFi router provides a good 400-600mbps.

 

The Deco App tests at similar as do wired connections to PCs, TVs etc.

 

The WiFi via the Deco M9 is horrendous at 20-40mbps so 5-10% of what is available. Any Deco, any distance away all similar.

 

 

 

I guess it could have always been a settings problem as I have not had the speed to notice previously (40-80mbps on copper).

 

I dont recall changing many if any settings on the Deco App so assuming it is default. Some highlights which may make a difference.

 

WiFi - both 2.4GHz and 5Ghz are on

Network Optimisation has been carried out - now says perfect

Deco up to date

IPv4 Dynamic IP

Ipv6 Disabled

IPTV disabled

Mac clone disabled

DDNS disabled

SIP ALG enabled

UPNP enabled 

Fast Roaming disabled

Beamforming enabled

 

System is three M9 Decos. One hard wired direct into the new router. All Decos are online.

 

Several higher demand devices (TVs, phones, tablets, laptops) and alot of devices which likely can only the 2.4GHz frequency (Hive, cameras etc).

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Re:Deco M9 Poor Wifi Speed
2022-11-21 22:15:13 - last edited 2022-11-21 22:23:28

  @CrisisWolf 

 

On my Deco M9 Plus, with smartphone wirelessly connected to it, and with gigabit Internet I can have up to 650Mbps with wired Main Deco and up to 430Mbps with wireless Satellite Deco.

I hardly ever see less than 250-300Mbps in my speed tests with Deco M9 Plus.

 

When you do Test Internet Speed from Deco app, what is the result? This will test wired connection between Main Deco and Truespeed router. If they negotiated 100Mbps over their Ethernet link, that might be the problem.

 

See this document: https://www.tp-link.com/us/support/faq/1601/

It is possible you would just need to increase QoS value to 600Mbps down and 600Mbps up, to unlock the speed.

 

If that does not work, there is another option. You have Truespeed WiFi router, you said, would you consider running Deco mesh in Access Point mode? If yes, this is how I run it and I can share with you all other settings from my Deco mesh, perhaps replicating them would solve whatever issue there is.

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Re:Deco M9 Poor Wifi Speed
2022-11-22 08:22:48

  @Alexandre. Thanks for your input.

 

This is the result of the built in Deco test and a PC on ethernet gets similar results.

 

 

My phone on the TrueSpeed WiFi when next to it (but has poor range) is

 

 

 

 

Whereas on the Deco WiFi

 

 

Not normally as bad as that mind but still no higher than 80mbps ever.

 

I read about the QoS and have changed from Auto to Manual and will see what this does.

 

What is Access Point Mode? I have heard of it but that is all.

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Re:Deco M9 Poor Wifi Speed
2022-11-22 12:47:14

  @CrisisWolf 

 

In Access Point mode Deco mesh provides WiFi coverage, Truespeed router will manage network: IP address allocation, static IP addresses management, content filtering, etc. Deco will pass through WiFi traffic without applying any bandwidth throttling and content filtering to it. 

In that mode, Deco provides maximum WiFi speed and performance it can deliver.

 

AP mode is useful when you want to find if any Deco configuration setting impacts WiFi speeds of your devices. In AP mode, all these settings will be disabled.

Also, in AP mode, because network will rely on Truespeed router for everything, every device connected anywhere is a part of same network. I have wired shared printer/scanner connected to my ISP router Ethernet port, I can use it from any device on my home network without issues. Same for file server.

 

Finally, in AP mode there are much less restrictions on how you could wire Satellite Decos with Ethernet, if you have that ability.

 

You can easily switch between Access Point mode and Router mode. If you miss important features disabled in AP mode, after troubleshooting you can just change Deco mesh back to Router mode.

 

See these FAQ documents for more info:

 

What’s the difference between Access Point mode and Router mode on the Deco?

 

How to set up Deco to work in Access Point mode

 

General questions about Ethernet Backhaul feature on your Deco

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Re:Deco M9 Poor Wifi Speed
2022-11-23 05:42:55 - last edited 2022-11-23 05:58:46

Hi @CrisisWolf,


I have a similar experience with Deco XE75 Pro with Samsung Galaxy A32 5G and I just recently posted it in this forum
https://community.tp-link.com/en/home/forum/topic/546618?replyId=1152524

 

My other 20+ devices is working fine and picking up good WiFi (300 - 500 Mbps), while the A32 5G from 5 feet, only get's 30 Mpbs. From 30 feet away, the signal gets weak and speed is around 0-30 Mbps.

 


 

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