Asus RT-BE92U random loss of internet connectivity then comes back

[jimmysofat6864]

I got the RT-BE92U for my parents now but occasionally I get a random loss of connectivity across all of my devices then it comes back after a few minutes. Not sure if it’s because I enabled ipv6 or the qos settings or the TrendMicro security service or MLO which is odd because the previous SBG7600ac2 didn’t have this issue or even my RT-ax58U at home didn't have these issues and lots of these features are turned off out of the box. Trying to pin down if it’s the new modem causing the issue or the new router. Modem is ES2251 from spectrum if it helps. I tried checking the modem diagnostics page but spectrum locks it out and makes it inaccessible.

I had a similar situation a few days ago where phones and tablets weren't working but my laptop was for some reason and the inbuilt speed test on the router was working fine but phones were not working and eventually connectivity came back. Not sure if it's a bug or something I set up wrong.

[jimmysofat6864]

Hi there tried all that didn't work. What did work was disabling all the router functions that I mentioned so clearly there is an issue with one of the functions I mentioned but I am not sure which one it is. 

[jzchen]

From past experiences, not specifically with your router model, leave QoS off.  AiProtection is good to enable.  Traffic Analyzer (by default typically off) I no longer enable.  YMMV

[MongoNC]

I bought this router a week and a half ago (December 23) and updated the firmware since there was new firmware listed. I had the same issue as you did with random rebooting. As noted in some other threads I had an issue with one of the four CPU cores being way higher than the other three (50%+), and the core that was acting up was never the same. Rebooting fixed temporarily - maybe fore 12 hours, but then one of the cores would be running high again.

After a random reboot yesterday evening, and cussing for about 30 seconds, I finally decided to hard reset the router as per the link that  Aureliannn_ASUS posted in their reply. 24 hours later so far so good. All four cores are stable and I'm not getting the thermal zone errors in the log like I was before the reset.

[jimmysofat6864]

My issue wasn't random rebooting and I didn't have any CPU cores maxed out. It was just loss of network connectivity. I could manage the router via 192.168.50.1 and the speedtest tab would work but internet wouldn't work for other devices but I think I've narrowed it down to having too many things enabled. Before, I had Ai protection, QoS, apps analysis, Traffic Analyzer, MLO, and IPV6 enabled and I have random internet drops. But when I do AI protection, MLO, and ipv6 only, it seems relatively stable and passes the two day mark as before it would drop in less than a day. I’m assuming having everything enabled breaks it which is a shame because my previous asus router worked with no issues when everything is enabled.