Deco M4R (AC1200 Mesh) Very low speed.

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Deco M4R (AC1200 Mesh) Very low speed.
Deco M4R (AC1200 Mesh) Very low speed.
2021-11-14 22:51:39 - last edited 2021-11-15 00:04:00
Model: Deco M4
Hardware Version: V2
Firmware Version: 1.4.3 Build 20200918 Rel. 74289

My ISP speed is 1Gb, If I connect directly on the router (using 5e cable) I get around 850~980 for download and around 200 for uploads. Great.
If I connect my Main M4(AC1200) to my ISP router, then connect via the same 5e cable from the m4 to the computer, same speed, 800/900 down with 200 up.

BUT.

 

I created the mesh network with 3 devices then I connected my computer via cable (5e, same used on the tests) and I'm getting a lower speed than the wifi, wifi is giving around 150~200 and the cable is around 100, sometimes not even that.

What am I doing wrong? T_T

M4 is different form M4R? Do I have the wrong devo mesh system? What's going on? T_T

 

--- edit.

 

I managed to get 240mb via cable after reseting and enabling IPV6.

 

But still, far from 1gb.

 

--- edit #2 and #3

 

Added configuration showing 1Gbps connection, but IPV6 with no internet access. I don't know if its related. 

Updated title.

 

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6 Reply
Re:Deco M4R (AC1200 Mesh) Very low speed.
2021-11-15 08:27:20 - last edited 2021-11-15 08:29:31

Yes, M4 & M4R are the same.

 

You're using Deco M4 3-pack, right?

 

Did you do a speedtest on the deco app on your phone? If you did, what was the speed there?

 

I'm assuming you enabled ipv6 also from the deco app.

 

Also, in the deco app, set QoS to 1000mbps

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Re:Deco M4R (AC1200 Mesh) Very low speed.
2021-11-15 09:45:09

@Morilon 

Hi, Thank you for the feedback.

Deco M4 is the model for a kit, Deco M4R is the model of a single unit so basically, they are the same device.

As for the speed test, I do have some confusion:

There is 800-900 m/s download, 200m/s upload from main Deco via Ethernet connection, right?

So 240m/s over Ethernet cable, 150-200m/s over Wi-Fi are tested from one of the satellite Deco M4?

--if yes, are both satellite units wirelessly connected to the main Deco? How far is the distance?

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Re:Deco M4R (AC1200 Mesh) Very low speed.
2021-11-15 19:09:06 - last edited 2021-11-15 19:47:39

@ImtiazAli 

 

Right. Small parts, I have no idea what I'm doing btw, so please bear in mind my noobiness regarding network. x)

 

Yes, M4 & M4R are the same.

Great. One less thing to worry about.

 

You're using Deco M4 3-pack, right?

Yes. I can take a picture of the box but yes, this one from amazon.es (TP-Link Deco M4 Mesh Wi-Fi Set AC1200)

 

Did you do a speedtest on the deco app on your phone? If you did, what was the speed there?

 

I'm assuming you enabled ipv6 also from the deco app.

Yes, both IPV4 and IPV6 are enabled, BUT, my computer is showing "no internet access" from ipv6. I'm not sure if it's related to DNS configuration or not.

 

Also, in the deco app, set QoS to 1000mbps

From my provider, 1000/200. I figured that up arrow is upload and down arrow is download.

 

The wifi signal is "strong" on the entire house. I'm pretty sure I'm doing something wrong, this can't be it. 

 

More info;

 

IPTV/VLAN - disabled

DDNS - disabled

SIP ALG - enabled

UPNP - enabled

Roaming - disabled

Beamfoming  - enabled

Mode: Wireless Router

And the interference test showed me this;

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Re:Deco M4R (AC1200 Mesh) Very low speed.
2021-11-15 20:12:54

@TP-Link 

 

Right, let's break it down.

 

There is 800-900 m/s download, 200m/s upload from main Deco via Ethernet connection, right?

Correct, if I connect directly on the main deco via ethernet (5e), It gives me pretty much full speed.

 

So 240m/s over Ethernet cable, 150-200m/s over Wi-Fi are tested from one of the satellite Deco M4?

I tested again and I'm getting different speeds from B and C. 

 

C > Laptop over Wifi = 150~180Mbps

C > Laptp over Ethernet = 200Mbps

 

B > Laptop over Wifi = 220~250Mbps

B > Laptp over Ethernet = 240~260Mbps

 

A > Laptop over Wifi = 260Mbps

A > Laptp over Ethernet =260Mbps

 

The connection between A and the laptop is the one that is bugging me now, how can it be so low if its directly connected? I'm pretty sure I did something wrong, I just don't know what.

 

R: ISP Router

A: Main Deco

B: Hall Deco

C: Office Deco

Blue Line: 9~10mts.

Orange Line: 5mts.

 

There's a walls and microwave/fridge between A and B, but it's a straight open line between B and C.

 

And I was thinking about moving the B one room closer to the main router. I could either get a cables from A to B then B to C. 

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Re:Deco M4R (AC1200 Mesh) Very low speed.
2021-11-16 03:43:23

@Morilon 

Thank you for getting back to me.

I remembered you mentioned on the first post that:

"If I connect my Main M4(AC1200) to my ISP router, then connect via the same 5e cable from the m4 to the computer, same speed, 800/900 down with 200 up."

but on the latest speed test, it showed:

A > Laptop over Wi-Fi = 260Mbps

A > Laptop over Ethernet =260Mbps

There seemed to be a huge difference in speed from the main Deco. Or was the speed 800/900 down with 200 up is only referred to ISP modem?

 

Considering the distance and barriers between main Deco A and Deco B, it would be suggested to use an Ethernet cable wire Deco A and B together.

 

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Re:Deco M4R (AC1200 Mesh) Very low speed.
2021-11-16 11:30:48

@TP-Link 

 

There seemed to be a huge difference in speed from the main Deco. Or was the speed 800/900 down with 200 up is only referred to ISP modem?

Not sure, I was tweaking on ISP router configurations and stuff, I'm not sure if I did something there that somehow did that, tonight I'm going to reset everything and start over.

 

Considering the distance and barriers between main Deco A and Deco B, it would be suggested to use an Ethernet cable wire Deco A and B together.

That's what I'm thinking, but... If I need a cable all the way there I might as well just to the extra 5m and set a cable directly on my computer. I don't know.

 

--- x

 

I also need to turn off both 2.4/5.0 Wifi from the ISP router and let the deco be the only source of Wifi for the house, this might interfere as well. I'm giving a shot, if that doesn't work, I'll just return and use the ethernet with a simple repeater for mobile devices. The only device I'm concerned on getting full speed is the main computer, all mobile devices, tvs and stuff like that can work just fine with whatever speed they get. 

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