Delay in automation between trigger and action

I have this automation:

- id: SyncDenLights
  alias: Sync Den Lights
  - platform: state
    entity_id: light.switchlinc_dimmer_4e_d9_db
    attribute: brightness
  - service: light.turn_on
      entity_id: light.switchlinc_dimmer_58_40_ac
      brightness: '{{ state_attr( ''light.switchlinc_dimmer_4e_d9_db'', ''brightness''
        ) | int(0) }}'

When I turn on or set the brightness of light.switchlinc_dimmer_4e_d9_db, light.switchlinc_dimmer_58_40_ac is set to the same brightness, which is what I want.

But, the target doesn’t do that operation until about 3 or 4 seconds from when the “source” light is changed. Can’t this be made to happen immediately so that they look in sync?

Are they cloud based lights?

No, sorry for not making that clear. These are Insteon Hub based devices. Normal response time is nearly immediate for using the Insteon Integration objects on the Overview page. Just this triggered action is slow.