I running Propresentor6 on an iMac with the Multiscreen and the SDI output modules.... We run 3 outputs from Propresentor using the Matrox Triplehead 2go .... The ultrastudio 4K is connected via thunderbolt ...
the display on the the Ultrastudio 4k is showing all 3 screens side by side instead of just the main screen and the TV's the 4K is outputting to are not getting any signal....