replied on December 7, 2016
Hi Sophia,
From the description, it sounds like IE is choking on trying to load all 15,000 options. Do you get better performance in other browsers?
Additionally, having users pick from a list with 15,000 options implies they probably have an idea of what they're looking for. I would recommend setting the dynamic field to be a text field, and assign the Everyone group the attribute [Settings]MaxDropDownLength, with an integer value. Then they will see a text field where they can begin typing the field value. When the number of options to which their partial entry applies is at or below the value of the attribute, they will get suggestions for the values of the metadata field. Such an implementation would also avoid having the browser try to load all 15,000 options at once, circumventing the original issue.
Hope this helps!