Hello,
Sorry to hear you are having issues. Just a suggestion, instead of Grouped with folders, why not try using tabs instead. As for the crashing issue. Do try this, backup your current layout. And restart all over and start adding icons and see if the amount of icons are causing the issue. Also try looking into if there are icons from external drive that slow in respond that might causing issue.
Thanks
Basj,
Stardock Community Assistant.