MQTTMaster: I feel you — automation lag is frustrating. What worked for me was using a dedicated 2.4GHz network.

2 days ago · profile

Check the GitHub issues for Home Assistant — there's a helpful writeup that covers this scenario.

See also

• What's the most reliable camera you've used?
• Issue: automation not triggering in OpenHAB
• How do I connect my Philips Hue to Home Assistant?