I'm on firmware 4.0.219. If there was nothing in the logs I would not be surprised if the mini disconnections are ISP-related, they've been having outages constantly for 2 weeks lately. The longer drops that I described have been happening for longer though. Not daily, but often. I haven't noticed any patterns at least not with my personal usage, seems to happen mostly randomly at different times of the day from early to really late and anywhere in between. I am using a network switch in my office to get ethernet to PC/consoles. But from what I can tell it is affecting all devices because my phone will drop WiFi and I'll hear the groans in the room over when it disconnects them from whatever they are playing on the PS4 and 5 in that room.