Good News - I just downgraded the firmware to 3.0.0.4.386.46065 and things are back to normal - all my devices are recognized and functioning well and there are no more kernel errors. It didn't take long and there was no expected frustration. This is my lucky day!
I'll just ignore the flashing...
YES - it's stable - with my setup it was PERFECT! I have many 5g devices (Nest cameras, Apple devices, Amazon, etc.) and they all performed flawlessly. In fact, my iPhone consistently tested faster on 3.0.0.4.386.46065 (487 versus 370).
I wish I had checked for problems, like you, before I...
I have. Unfortunately, I "fixed" problems I didn't have - everything was perfect before I updated the firmware. I have an RT-AC88U with 2 RT-AC88Us as AiMesh devices. I have a very "smart" home with 80+ devices that were all recognized and reported in the devices list - everything was great...
It's good to know I'm not the only one with the issue! Thank you!!
Since I don't see any performance issues, I'm going to wait for the next firmware release now that I know it's not related to anything specific with my setup. (The messages every four seconds do fill up the log though!)...
Thank you for the information, bertilak - I may give it a try when I have some time. I don't see any issues that are causing the messages and hope Asus will address it in their next release - right now I've viewing it as just a nuisance! BTW, I took RMerlin's suggestion and sent feedback.