Asus RT-AX88U (Merlin 388.2.2) 2.4 GHz VERY slow, but 5GHz very fast.

[Kamikaze01]

Hello there.

I need some help.

My Wi-Fi at 2.4 GHz is VERY slow...

I reach about only 1-2 Mbit/s with 2.4 GHz
But I get more than 250 Mbit/s with my 5 GHz.
What can I do??!

I am forced to use 2,4 because of some smart Home automation devices.
They all use only 2,4 GHz and I can not handle them, when my phone is in the 5 GHz.

Here are my settings


Any help what I can do??!

This is VERY annoying as my ISP provides me stable 300Mbit/s via FTTH.

Thank u very much !!!

 

[Ripshod]

After the initial setup on 2.4 you should be able to control the devices over 5GHz as in theory they're all connected to the same network (same subnet).

 

[Kamikaze01]

Hello and thanks for the answer.

Yeah you are right... most of them are in the same subnet.

But is there a solution or a reason anyway for the huge difference in speed??!

 

[hybrix]

After the initial setup on 2.4 you should be able to control the devices over 5GHz as in theory they're all connected to the same network (same subnet).

Hi, I have the same issue with AX88 and 2,4ghz network. 5GHZ is fast, 2,4 is 1-3mbps..... I have a wired tplink range extender and it suffers same issue, it looks like the ax88 might be putting noise in the frequency, is that possible??

 

[Tech9]

Slow 2.4GHz Wi-Fi may be caused by multiple internal (hardware issue, wrong settings) and external (environment, client) factors.

Start troubleshooting with System Log, Wireless Log - RSSI, Tx/Rx rate to your client. May give you some clues what is going on. Change the channel, use 20MHz wide only, disable Airtime Fairness, disable non-standard features like Universal Beamforming. Try again and see what happens.

 

[Ripshod]

What distance from the router are you testing at? 5 meters from my router I'm getting 54 Mbit/s

 

[hybrix]

I read about IOT devices harm... I haclve many TUYA switchs in the guest Network, so I tested turning that wifi off and performance in 2,4ghz is great... Need to find a cheap way to replace them...

 

[Ripshod]

I only have 5 esp devices on the guest network so not really as loaded as you probably are. Even 802.11n wifi should deliver a 54Mbps connection, and does in my case.
Do you have Access Intranet disabled on the guest wifi?