I have a C8 hub that has worked fine. I’ve recently removed some zWave plugs (like a week ago) that were used for my holiday lights.
I’ve noticed in the last day or so that HomeKit doesn’t update or take commands very quickly. hue devices (Hue is integrated with HomeKit directly) are fine. Sometimes I’ll hit a device on/off in HomeKit and it won’t do anything and then it will “catch up” and the light will go on/off several times. I have restarted the integration.
Everything has been solid until the last two days. I did upgrade to the latest firmware the other night. Could having offline devices cause this issue?