@Tijno Got frustrated and replaced my deco mesh with a new Linksys MX8502 Atlas WiFi Mesh System. It wasn't cheap but it has been running flawlessly for a week now, wow, I thought HomeKit was the...

@Tijno wow, I have the exact same issue with my network. I use the S4's, all APs wired, HomeKit devices become unresponsive over time. Have you found a solution to this? So frustrating....