Utilize web workers to improve performance when handling a large number of identical objects, especially during copy-pasting operations, to prevent the app from freezing and improve CPU core utilization.
_From [ratul.m...@gmail.com](https://code.google.com/u/112967673599549311373/) on January 03, 2015 00:08:54_ When I have lot of dentical objects, and I copy paste bunches on them, the app freezes, and takes considerable time to get back. I then looked at how the CPU cores on my machine were being utilized. What I saw was that one core was at 100%, while the other cores were less than 10%. This to me indicated that the application is not able to effectively utilize all the cores on my machine for better performance. Can this be looked at? _Original issue: http://code.google.com/p/evoluspencil/issues/detail?id=664_