I'm using HomeKit with Philips Hue lights and I'm not observing any latency, even when using cellular. I think you're experiencing a bug, resetting some stuff m

I'm using HomeKit with Philips Hue lights and I'm not observing any latency, even when using cellular. I think you're experiencing a bug, resetting some stuff might help (the bridge if you have one, or the network settings of a device if it only happens with one). It could also be something related to your wireless access point.