@Tony That sounds possible, but unlikely as I know everything connected to my network. I will monitor it when it happens next time. Meanwhile, I found another strange issue: while all Wifi device...
Using M4 in router mode. Main unit and slave units are pretty close. 100 Mbps upload and 100 Mbps download from ISP. Usually, I got 100 Mbps Wifi everywhere. This is what I expected for this set of...