Man of Honour
I’m fairly certain that all Hive stuff is Zigbee rather than WiFi which is good. At the moment, everything is sorted out via the Hive hub. Any Hive devices connected to HA have to talk to HA via a cloud connection (as has been mentioned) which may well account for the hefty delay.
If you’re up for experimenting then a Zigbee dongle and Zigbee2MQTT opens up a whole new world of cheap, fast sensors
Thank you this is really useful. A project to look at over the Christmas break.