HomeKit Issue with WiFi access points and HomeKit

[scremndmn]

Hoping for help from someone smarter than I when it comes to WiFi access points and HomeKit.
I am having issues with many of my HomeKit devices showing no response, and i believe it has to do with my WiFi access points.
My current setup has my ISP (comporium) running coaxial cable into their router, which is then fed into a switch that feeds 4 TP-link access points spread throughout my house. Through the access points, i have 3 WiFi networks set up (one for personal use, one for guests, and one that all of the smart devices in my home are connect to, as well as my Apple TV 4K and 2 HomePod minis). Originally i had my Apple TV connected to an Ethernet port in the wall, and when i tried using the Apple TV as the home hub, i was having major issues. So instead I switched the Apple TV over to WiFi instead of a hard connection, and the devices started working again.
I would like to hook my Apple TV back up to the cat 5 connection, because I’m getting lagging issues when streaming on the tv. Is possible that the HomeKit connectivity issues have something to do with the 3 WiFi networks being produced by the access points have different IP addresses than the hardwired Apple TV?
I apologize if this sounds convoluted and nonsensical. I’m not a complete noob when it comes to this stuff, but I believe I’m a little over my head here. Any help would be appreciated. Thanks

 

[srl7741]

Keep things simple, everything needs to be on the same network, hardwire everything you can and try to reduce all the WiFi interference. Down the road when things are maintenance free and stable then you can look into customizing the network more.

 

[cynics]

Is possible that the HomeKit connectivity issues have something to do with the 3 WiFi networks being produced by the access points have different IP addresses than the hardwired Apple TV?
I apologize if this sounds convoluted and nonsensical. I’m not a complete noob when it comes to this stuff, but I believe I’m a little over my head here. Any help would be appreciated. Thanks

There is a possibility, yes. The majority of HomeKit devices and last gen Apple Hardware uses only uses mDNS (Bonjour) over Wifi via your networks subnet. Wired, wireless, network (with caveats), etc doesn't matter as long as they are on the same subnet and nothing is blocking mDNS.

Guest networks pretty much prevents local traffic, however additional user made networks while less restrictive are generally isolated. Not foolproof but generally if the last two sets of numbers in the local IP are different between network devices (10.0.30.20 vs 10.0.1.15) then they are on different subnets.

Sometimes in router settings you can find things like mDNS repeater, mDNS reflector, Multicast mDNS, etc or "rules" with something that allows this data across the subnet without it expiring.

If it works sometimes with intermittent 'no response' verify anything called mDNS enhancement (or other performance enhancing sounding names) and IGMP spoofing is toggled off. Also verify port 5353 isn't blocked.

Definitely reference your manufacturer before changing anything though.