Disable Auto-Update

[Ratief]

Please give us a way to disable the auto update of the factory calculations.

When designing a mall, or large factory, it would be So much better to not have the web page lock up for Every Single Thing I Change. I want to add all 50 items that I want to make and only then have the page lag out for 10 seconds doing the calculations once. A simple checkbox in the settings to disable updates would work, then once all items are added go back to settings and re-check it.