CB

This appears to be entirely due to the event bubbling when binding to the change event, which fires cbParamChange so the conditions can work.

The multipleselect usage is also extremely slow for large inputs. This seams to be half coming from repositionMultipleSelect on initial create of the multiselect.

Further testing confirms the slowing is coming almost entirely from the multiselect usage. The single select usage isn't showing any problems handling large inputs.

It's due to the number of DOM elements that it's creating. select2 creates them on open on-demand. The multipleselect creates them on binding of the jQuery plugin resulting in thousands of DOM elements sitting there unused, which is causing all DOM parsing behavior to become slow. This multipleselect usage may have to be removed in favor of the tags usage just built into select2.