@Carl If you were refering me about the user who claimed that issue been addressed, then I have to say I'm sorry. It only works after I reboot the router. The problem still there. That's is a...

Do yo mean firmware version? 20190629_18.47.02

Sorry, what's the code are you talking about?

I just tried this new firmware yesterday, and I think it solved the wired client speed drop problem. In my test case, my wired clients were able to maintain ~450Mbps in hours.(500 Mbps ISP). However...