When you click the button to use the form from the list of templates, it does indeed have to create a set of form elements from the template and this can take a few seconds if there are a lot of elements. I have several forms with more than 100 elements, and these take about 3 or 4 seconds to be created and displayed. I have put a progress bar with message (please wait...) in the settings on the button, which at least shows the user that something is happening.