The carnaval season started again

First let me explain what i'm trying to achieve.
We bought 100 metres of rgb led for our parade wagon. I want these to act on the color changing of the videoscreen via ambilight.
I'm fighting that i miss the option to let it monitor the secondary output. For now i did a test by making the secondary ouput master. It has some disadvantages while opening new windows and so on. But also I noticed the performance droop like you described already somewhere.
Now I'm thinking of using a second laptop for playing video. But also installing pcdimmer on that laptop and let it do ambilight as wel.
Now the question. Is there anyway to have two pcdimmer instances talk with eachother? I.e. Forward dmx channels that i use for ambilight?
kind regards,
Maurice