[Inkscape-devel] preview checkbox, again

Ted,

Yesterday for the first time I tried live-update effect on a large slow document (about 1Mb with lots of blur etc). It was a torture. I could not even adjust the number of paragraphs because it froze on every change for a long time.

You made the effects themselves asynchronous - that is nice. But in situations like this, the actual effect run takes only a small fraction of the total time; a lot more time is spent by Inkscape itself on saving and then reloading the large file. And since Inkscape itself is not asynchronous at all, this freezes everything including the effect dialog.

Sorry for pounding on it, but I think I've proven enough by now that the checkbox must be there and off by default :)