Browser hangs on the visualization

Hi, Great job on this add-on, it is really great! I've noticed when you use this visualization, especially when you copy a search, or open search from a dashboard that uses the add-on. The clustering of markers is disabled. So if you have a big search attached, it will hang the browser if you try to open the visualization tab. I've worked around it by reducing the data to something small like less than a thousand markers, go into the format and click "Disable" to "Enable Clustering", and then "Enable" again. Once you do this it works fine, until you try to copy. Any thoughts on how to fix this? Thanks again. This is a great add-on.