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The original was posted on /r/homeassistant by /u/lowie_987 on 2026-07-24 22:07:45+00:00.
I use a lot of zigbee for lighting in my house. I noticed that as you add more lights to the group, they start responding to commands in an asynchronous manner. This becomes a problem when using something like a push dimmer that sends lots of updates in a short time.
I noticed that Philips Hue doesn’t seem to have this problem. Their lights change colour all at the same time. I always thought it was part of their secret sauce which is what you pay them so much for.
It turns out I was wrong. Today I noticed the groups setting in my zigbee controller. It turns out when you group then via this, all lights listen to the same zigbee message instead of having to be individually told what to do. Upon setting this up all my synchronisation problems were resolved and dimming works better than ever.
I’m sure most people already know about this but I wanted to share this in case someone else has the same issue I had.