@PrimeBrett You have replaced single WiFi router with WiFi mesh. What you have found is old devices may not understand WiFi mesh or don't know how to handle it. This is especially common with Smart...

@L21KNS First, expectations. Your Satellite Deco M5, when properly placed, can deliver up to 200-250Mbps. Note "up to." Does not matter what you'll try. If you are OK with that speed, we can continue...

@tonyholdgate It is normal to see 1970 as a time stamp at the start of the log. When device reboots, it does not have access to the Internet to get correct date/time. The answer on why it defaults to...

@Alexandre. Status update: problem solved. I have not reinstalled Deco app. I have received email from TP-Link support and they noticed one of Deco nodes in my mesh, nicknamed "Office," appears...

@David-TP Done that in Deco app, with screenshot attached. As it has been 24 hours since my original post and nobody else joined complaining about the same issue, it is not widespread. Perhaps,...

@El_Lobo One thing I forgot to mention: after you added Satellite M5, please verify in Deco app it established Ethernet link to Main Deco: If/when you lose wired Internet again, check LED on both...