Auto-sync one light in a group to 70% of the brightness of the group?

Configuration
1

I have a LIFX bulb in a group of Hue bulbs and the LIFX is significantly brighter.
I’m also using the Adaptive Lighting integration and as it transitions into the nighttime lower light scenarios the difference in brightness way too much.

So, I set out to automate this light when the group changes.
This is the best I could do.

alias: Lower Relative LIFX Brightness in Living Room
description: Sync color_temp from light.living_room to the LIFX bulb and lower the brightness.
trigger:
  - platform: state
    entity_id: light.living_room
    attribute: brightness
  - platform: state
    entity_id: light.living_room
    attribute: color_temp
condition:
  - condition: state
    entity_id: light.living_room
    state: 'on'
action:
  - service: light.turn_on
    target:
      entity_id: light.living_room_lifx_bulb_01
    data:
      brightness: "{{ (state_attr('light.living_room', 'brightness') * 0.7) }}"
      color_temp: "{{ state_attr('light.living_room', 'color_temp') }}"
mode: queued
max: 2

It works, but when turning off and on there is a huge delay.
Is there another approach that would work better?