VA slow style manager

I am currently working on extension of a small buliding in visual arq.
The working project is getting harder and harder due to a very slow style manager.
How is this supposed to be fixed?

Hi David,
We improved the performance when working with the styles manager dialog a few versions ago. Which VisualARQ version do you have? make sure you have the last one: Update - VisualARQ
Please let me know if the problem persists.