@jamieandrew20 I have the M4 system, one plugged into the main router and two wireless. With the same issue and won't go above 100mb.

 

1 .4.3 Build 20200918 Rel. 74289

set the Qos to 1000 up and down and dont enable high priority , also make sure the ethernet cable you us can achieve GB speeds or you will get stuck on 100mbps as i did cause of the Qos and ethernet cable i was using , the Qos setting can be found in the deco app

@jamieandrew20 it's on the CAT5e cables that came with it. 

 

QoS hasn't changed anything. 

I just got my Deco 4, and i am having the same speed capping issue. i have a 300/50 speed broadband. Using my old router and directly connected to my laptop using a cat-6 cable, i can get full speed of 300mpbs. After changing to M4, i only can get 90~100mpbs direct connect using the same cat-6 cable. I did all the possible actions - changed the QoS bandwidth to 1000mbps for both up/down - disabled UPNP please help

hardware verson: v2

firmware: 1.4.3 Build 20200918 Rel. 74289

@ChiewFah 

 

If you just got M4, you probably still have your old router around. 

 

Undo network changes you did for Deco, bring old router back and set it as it were before Decos.

Power off all Satellite Decos.

Connect Main Deco to router.

Change  Deco Operation Mode to Access Point.

Connect laptop to second port of Main Deco.

 

Run speedtest from laptop.

 

If you are still not getting better than 100Mbps, it is possible you have Deco E4 instead of Deco M4. They look very similar but E4 has 100Mbps Ethernet ports, M4 has gigabit ports.

 

If you'll get full speed of 300Mbps, you'll know there is something in M4 configuration settings when you run Deco in Router mode, and you could focus your attention there.

Hi, I have the same issue.

 

I have two M4R. Main is connected directly to ISP modem. The second is connected with the main over WiFi.

 

Model: Deco M4R

Hardware Version: V2

Firmware Version: 1.4.3 Build 20200918 Rel. 74289

 

QoS is set to 1000/1000.

 

When I connect laptop directly to the ISP modem I get proper speed: ~600/50.

When I set up mesh network and do the test I get 100/50 no matter if I'm connected to the main Deco over cable or WiFi!!

 

It starts working correctly when I plug the satellite Deco out and do a reboot.

Let me see how long it will work that way.

 

Edit. After ~1h speed goes down to 100/50.

Even with one Deco there is an issue with this limit.

 

Any suggestion?

This is my setup (the wall between rooms is quite thick):

 

 

Speed tests:

Connected directly to IPS modem (cable):

 

Deco system (before reboot, with satelite Deco plugged out):

WiFi (with cable it is the same result)

 

Deco system (after reboot, with satelite Deco plugged out):

WiFi:

 

Wired:

 

Those high speed results last for an hour. After that the speed goes down to ~100.

 

 

And yes, I'm in router mode.

 

I will switch to access point mode and see how it behaves. 

I switched to the access point mode but it behaves completely unpredictable. First worked with the expected speed (more than 100), then (after a few hours) went down to ~90 (download speed) and even after a few reboots still worked with ~90.

 

After that I changed to router mode, first test showed ~400 download speed, the next one ~90...

I totally confused.

 

The tests were done on three different devices and all of them gave similar results.