RT-BE92U - On-going random losses of Internet/WAN access

[AndrewMcN]

I've had the RT-BE92U for a few weeks now and a couple of times a day it simply stops routing DNS WAN traffic and the Wi-Fi networks also stop routing. All Internet access grinds to a halt because of this. Sometimes it returns to normal on its own but today it was so inconvenient that I got it to reboot via the web UI. It's then fine again for several hours.

It's like the unit itself enters some kind of semi-hung/crashed state. I'm thinking there's some kind of memory leak or that the RAM capacity is insufficient. It runs for several hours and then begins going faulty.

I am 26 years into an advanced IT solutions architecture/engineering career covering pretty much all kinds of infrastructure. So, the most I'm guilty of is not trying the basics.

I am able to ping externally, however I tend to find that I cannot get DNS traffic to pass and that includes direct queries of external DNS services, e.g. 8.8.8.8 (I can ping this guy).

The Wi-Fi networks can't even reach the router itself. I have to go to my wired laptop to engage with the router. The router web UI responds normally. The system log just seems to show either long pauses between log entries or errors about wireless client disconnects.

This kind of error seems to be common in the log just now:

kernel: WLC_SCB_DEAUTHENTICATE_FOR_REASON err -30
kernel: WLC_SCB_DEAUTHORIZE error (-30)

Could be red herrings but they always seem to be around when the crashes happen.

I have a lot of smart devices. It says I have a total of 54 clients but the vast majority of those will generate very little traffic.

I use Sky Stream. So, there can be a lot of throughput there. I also watch a lot of Twitch. Again a lot of data passing through for that. Nothing I wouldn't expect this router to handle though.

I have AiMesh up and running with two nodes.

I use the Time Machine backup capability with a USB drive attached. There's an hourly backup.

I have the AiProtection turned on. DoS protection enabled.

I also have the DNS over TLS enabled opportunistically but I've tried putting this off and it doesn't help.

I just fear that the hardware spec isn't able to handle the workload.

It just seems like the firmware isn't stable enough yet. I need to decide if I should be returning this or just be patient and wake for the next firmware updates.

Anyone else with this router experiencing issues despite factory resetting?

[jbflam]

I just changed mine to RT88, a bit pricey but no problems anymore, i wasn't the only person returning a RT92 when i visited the support office. The support guy there dared to tell us that this model was actually very fine and stable, i told him to check the logs and this forum.

[bobo138]

Why Wifi 7?  Without 6ghz. Just get a Wifi 6 router. But this tell us right there that Asus is having problems with 6ghz

[TheRealDamiani]

To temporary fix reboot / internet disconnection issue, enable ECO mode.

[Ayame]

My router seems to be stable with eco mode and without MLO now with this fw:
3.0.0.6.102_37506

But it would be nice to be able to fully utilize all the functions with stable operation...

[TheRealDamiani]

Before I returned it, I can confirm that it has something to do with the 6Ghz tx power adjustment. I’m guessing it draws to much power and it crashes the router. So instead of enabling ECO Mode (which lowers all 2.4Ghz, 5Ghz and 6Ghz tx power down to minimum setting - power saving) just turn down the 6Ghz tx power from Performance to Good or below. I only tested 6Ghz tx power on power saving but maybe it will be stable on a higher setting (balanced, good, etc). So at least by doing this, 2.4Ghz and 5Ghz will be at full Performance power until Asus updates FW to fix it. Also, MLO is stable while on, it had no issues. To find tx power option go to Advanced settings > Wireless > Professional > select 6Ghz band > scroll all the way down and lower tx power.but make sure you turn off ECO mode first otherwise your going to have to change the 2.4Ghz and 5Ghz to performance separately which will take forever each time you apply the setting.