I have a light fixture that contains five Philips Hue bulbs, and in HA I’ve grouped them:
- platform: group name: Living Room Light entities: - light.living_room_lamp_1 - light.living_room_lamp_2 - light.living_room_lamp_3 - light.living_room_lamp_4 - light.living_room_lamp_5
When I turn on Living Room Light, there’s a small (300-500 ms) but jarring delay between when the individual bulbs turn on. When I use the Hue or Google Home apps there’s no perceptible delay; the bulbs are perfectly in sync. When I use Homekit via the Apple Home app there’s a tiny (100ms) delay; almost imperceptible.
Why is HA’s delay so much greater, and can anything be done to reduce it?
Some extra info: my HA instance is running on a VM (3G RAM, 2 vCPU) hosted by a Mac Mini using the standard disk image. Core + Supervisor CPU usage is around 3% and RAM 8%.