BE30000/BQ16 Pro - Devices dropping to 2.4Ghz, will not reconnect to 5Ghz

[CMitchell]

Hi, fairly new system, as the subject states, many devices across all 3 APs dropped from 5GHz to 2.4, and I am having great difficulty getting them back. Essentially I have to take them offline, delete the record of the device in the offline client list, and reconnect them to get them back to 5GHz.  rebooted the network, no help. A simple device reboot, which normally would work is not currently. I was running on channel 36, when this happened I noticed some interference, have switched to 161, still having the issue. It seems like corrupt entries in the client DB in some manner. Latest firmware, happened to a Windows 11 PC, Echo devices, Ring cameras, some of these mere feet from an AP. Any thoughts?

[Aureliannn_ASUS]

Hi @CMitchell ,

thank you for reaching out. 

Regarding the issue you encountered, we recommend the following troubleshooting steps:

1. Try manually selecting a less congested channel for the 5GHz band, such as channel 36, 40, 44, or 48.
2. Ensure that your router and all connected devices have the latest firmware updates installed.
3. Temporarily disable other wireless devices to see if the issue improves.
4. If the above steps do not resolve the issue, consider restoring the router to factory settings and reconfiguring the network. Please note that resetting will erase all settings, so be sure to back up any important information beforehand.
5. We recommend first connecting only the main router with a single node to see if the issue persists. Then, gradually add additional nodes to identify any potential sources of the problem.

If the issue persists, please feel free to contact us for further assistance. Thank you.

[CMitchell]

Thank you! Firmware is current. I have just moved to channel 48, which sowed fully clear of interference, so we'll see how that goes. I did have it on Auto, also tried higher range ports, but there was always some interference on them. As for factory resetting, I've already had to do this once for a different issue, I will not continually do this, for a $1500 system. ASUS needs to do a much better job on their software. 

[jycity]

I'm also having the same issue now as well. Were you able to fix it on the new channel?

[CMitchell]

I had already moved all of my 2.4 only devices to an IoT SSID, I had left 2.4 enabled on my main network in case any devices had trouble on 5Ghz. As I mentioned, many devices kept defaulting to 2.4, which for some devices resulted in a noticeable performance degradation. I ended up turning the 2.4 channel off on my main network. In addition I kicked my 5Ghz down to the 40Mhz band, set to channel 36. Finally, I disabled MLO between nodes and let them connect solely on the 2nd 6Ghz channel, which I removed from my main network. So right now my main network has the 5Ghz and 6-1Ghz, nodes connect on 6-2Ghz for backhaul, and all 2.4Ghz devices are on my IoT network. Everything has been rock solid for the past two weeks that this has been in place. All my 5Ghz devices are connected and stable, including a number out outdoor Ring cameras. I lost a bit of bandwidth on 5Ghz, but I don’t need 6-700Mbps on those devices, on 40Mhz I am getting 3-400Mbps which is more than enough. 

I am going to give it a few more weeks and I may re-enable MLO backhaul and see what impact that has, but right now everything is working well.