Slow Apple HomeKit after updating to iOS 16, 16.1, 16.2 and alos on MAC OSX 13.0.1

I've had the same problem for quite a long time now, and it was most noticeable when using Matter or Thread-connected devices. They were responding very slowly or not at all (sometimes even disconnected/not reachable, even when they were powered). This became pretty annoying because I have many automations to turn on lights when gates open, and many rooms don't even have light switches anymore.

My first solution was to reset my router. It helped for a very short period of time, but everything went back to lagging pretty soon.

Then I took all HomePods and Apple TVs, switched them off and on again. It also helped; everything worked fine for some time, perhaps 24 hours. Better than nothing, I guess.

Because the Matter and Thread devices were the most problematic ones, I zeroed in on devices that are HomeKit enabled but don't have the standard. I have one 1st gen Apple TV 4K. After disconnecting it from power, everything started working perfectly, even without resetting anything else. This might not be the solution, but it's been about a week now, and everything responds flawlessly and very quickly. Perhaps you guys could try out the same method and report back? It might only be a fluke, but I've never felt closer to solving it.

For reference, my HomeKit setup consists of:

- Gen 1 HomePods

- HomePod minis

- Apple TVs

- About 100 HomeKit devices (lights, shades, doors, gates, switches – great when it works, insanely annoying when it doesn't 😉)

- Of course, all devices are on the latest software.

I really hope this helps some of you. Of course, it's no permanent solution to disconnect all old Apple TVs, but it's absolutely better than nothing at this point.