I would like to know what you are doing differently like your connection path / interface, because I cant get cymbal choke to work in Studio One 3 but it works in Everything else !
I am Using a Roland TD-12 kit connected midi to my Komplete Audio 6 Audio interface and then I setup "New Instrument" midi device receive from and sends to Audio 6 then select set as default in Studio One 3... There are no other steps to make ???