caption system is atrocious, grind-to-a-halt, creator killer

This caption system is not ready for prime time. It's atrocious. It grinds the system to a halt after you edit a caption -- for some reason unknown to me--even after shutting down any other applications running on the PC, it is impossible to work with. Simply freezes up the entire app for 20 seconds at a time once you finish editing a caption.