@Eladeb 

Could be many reasons, really. Wireless interference, how Deco mesh is set up, how speed tests are run, what type of device and what kind of WiFi network card are used to run speed tests.

The best I ever got with my Deco M5 was 460Mbps, with average results around 350Mbps.

This is what I have:

Gigabit Internet

Deco mesh runs in Access Point mode

Deco Main Network has 2.4GHz disabled, only 5GHz enabled

Very low interference from neighbouring WiFi networks

Using speedtest app on Android smartphone connected to Deco Main Network

Manually choosing in speedtest app test server that is on my ISP network

Locating smartphone in direct line of sight from Deco M5, on the same level as Deco, about 2 meters (6 feet) from it

Almost zero home network traffic when running speedtest and zero other traffic through Deco M5 smartphone is connected to

Also, on a side note: it might be something with my smartphone, but I never got better than 100Mbps on it when connected to Deco 2.4GHz WiFi. Not a problem for me, as I have really good 5GHz WiFi coverage from Deco mesh in my house, so I just disabled 2.4GHz.

@Alexandre. 

Hi Alex ,

My M5 serving as router so i wonder if that the reason on low wifi bandwidth .

i gusse that the mem/cpu realy forcing the unit down.

im using 2.4 and 5 tried to enable only 5 without success  .

im using for testing S21 ULTRA  and ASUS laptop with wifi 6 so no boundaries of bandwidth there.

my converge are perfect around the house.

Elad

@TP-Link 

Hi ,

Yest the wifi work only at 5GHZ and there no improvements at all between 100-150mbit.

1. pic attached .

2. pic attached .

3. my ipconfig just the part of the wifi interface :

Wireless LAN adapter WiFi:

   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Intel(R) Wi-Fi 6 AX200 160MHz
   Physical Address. . . . . . . . . : ***************************
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
   IPv6 Address. . . . . . . . . . . : 2a0d:6fc2:5940:4800::100a(Preferred)
   Lease Obtained. . . . . . . . . . : Wednesday, April 28, 2021 10:12:54 AM
   Lease Expires . . . . . . . . . . : Thursday, April 29, 2021 10:12:54 AM
   Link-local IPv6 Address . . . . . : fe80::1de:2315:7537:ffdc%12(Preferred)
   IPv4 Address. . . . . . . . . . . : 192.168.68.113(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Lease Obtained. . . . . . . . . . : Wednesday, April 28, 2021 9:56:16 AM
   Lease Expires . . . . . . . . . . : Wednesday, April 28, 2021 12:12:56 PM
   Default Gateway . . . . . . . . . : fe80::52d4:f7ff:fe91:a270%12
                                       192.168.68.1
   DHCP Server . . . . . . . . . . . : 192.168.68.1
   DHCPv6 IAID . . . . . . . . . . . : 203702668
   DHCPv6 Client DUID. . . . . . . . : 00-03-00-01-5A-08-55-88-94-E8
   DNS Servers . . . . . . . . . . . : 2001:4860:4860::8888
                                       2001:4860:4860::8844
                                       82.102.139.10
                                       82.102.139.20
                                       192.168.68.1
   NetBIOS over Tcpip. . . . . . . . : Enabled

4. im adding the results from the TPLINK app testspeed .(wired).

wireless speedtest from the Asus pro duo

wifi connection config :

Regards ,

Elad

@TP-Link 

NP.

thanks!.