iOS 16.4 has broken HomeKit connections again

Experiencing a regression in the HomeKit connections with iOS 16.4 release, exactly as it was in iOS 15. There are certain connected devices (for me, that's Eve light strips and myQ garage door hub) that are not reachable 98% of the time. I must reset them to use them, they work once or twice for an hour, and then go offline once again. At or around the release of iOS 16, I set my Apple thread devices to have reserved IPs instead of dynamic IP addresses. So every Apple TV and HomePod had their own. That worked flawlessly up to the point of 16.4. All automations generally worked, things responded, and (most importantly) I never got the dreaded "no response" on devices. Since 16.4 the same old devices once again are always in "no response" mode. Super irritating to switch your entire smart home to Apple and have to deal with this a majority of the time!