I purchased a portable thunderbolt screen to use as a video monitor during djing. https://www.packedpixels.com/products/packed-pixels
Mix emergency doesnt recognize it as an extra screen. In the screen drop down menu i can only see "Color LCD" which is same as my laptop monitor.
If i drag the Mixemergency display to the monitor and try to maximize the screen it bounces back enlarged on to my laptop display.