Problem with light.group, responses / commands are very slow

Configuration
1

Hello,

i am using a light.group to switch my garden lights (5x) but apparently there is a problem i have encountered.

The lamps react very slowly or not at all when I switch the group on and off or change the color of the bulbs, for example.

I tested the whole thing under services under developer tools, if I switch a bulb of the group on/off there, it works within 1-2 seconds.

If I switch the whole group there now, it takes about 10 seconds until they are all on, although sometimes individual bulbs do not go on or off.

I have connected the lamps to the deconz, now I have already searched a bit and have also come across several contributions on the subject, but they are all from February and a solution was not there either.

can you create groups in deconz yourself? that is better?
or how to get around this?

here is my light.group in my configuration.yaml

light:
  - platform: group
    name: Garten Lights
    entities:
      - light.garten1
      - light.garten_steinbeet
      - light.garten_kugel
      - light.garten_rosen
      - light.garten_schuppen

and my setup

Home Assistant Core 2022.6.6
Home Assistant Supervisor 2022.05.3
Home Assistant OS 8.2

and my deconz map

deconz
deconz777×710 102 KB

2

In zigbee2mqtt it is definitely better to create the group on the coordinator rather than ha. I guess deconz will likely be the same.