2.4ghz issues with asus mesh

[GabrielPhoto]

Hi.
I have an asus mesh with the following
following
AXE16000
AXE11000
AX11000

All my other bands are great but 2.4ghz is struggling suddenly.
I have from time to time, experienced issues with my basement smart bulbs failing to turn on or off (not all at the same time and not often) but reviews from them claim similar issues .
Still it has been like 90% fine until yesterday where they all stopped responding.
Is like that they cant keep a connection to 2.4ghz.

I tested the 2.4ghz band from my phone vs 5ghz and it was extremely slow and even sometimes get a message that it has no internet.

So while it shows full bars, something is making 2.4ghz actual performance terrible. I tried different channels too without success.
You can see a screenshot of 2.4 vs 5 from the same spot.
Any suggestions?

 

[degrub]

Are you using fixed channel, 20 MHz width, WEP2 not 2/3 ?

This thread might be useful as general hints

Tutorial - Optimized settings for XT12 / XT8

I've been using two XT12s and one XT8 with old firmware as AP, until I decided to move from Edgerouter to Opnsense, and add multiple VLANs via latest firmware. I spent days messing around settings, noticed I had horrible 2.4Ghz performance, clients were jumping around nodes, nodes were...

www.snbforums.com

 

[OzarkEdge]

All my other bands are great but 2.4ghz is struggling suddenly.

Beware using router USB Mode 3.0... the higher speed data comms of USB 3.x can generate EMI in the 2.4Ghz band that can affect 2.4 client connections/performance, particularly for 2.4 clients at distance from the router/AP. If you are using router USB Mode 3.0, try switching it to USB Mode 2.0 to troubleshoot.

Similar WiFi interference is possible with other cordless devices like cordless mice, keyboards, headphones, phones, etc. operating in the 2.4GHz band.

OE

 

[GabrielPhoto]

And in terms of my mesh performance, does it affect anything to have the ax11000 which does not have the same bands as the other 2?

 

[degrub]

My understanding is the "mesh" operates at the lowest common denominator for node to node, be it remote or main. That is why for highest throughput, all nodes should be the same model on the same firmware version. Sharing backhaul bandwidth with clients means lower bandwidth for all.