Speeding Up Batch Actions
If you're running a Batch action on a folder full of images, one of the things that can really slow the process down is the fact that the History palette keeps creating History States (undos) for each image. To keep your Batch actions running at full speed, there are two things you can do: In the History palette's flyout menu, under History Options, turn off the checkbox for Automatically Create First Snapshot. Secondly, go under the Photoshop menu, under Preferences, and choose General (in Windows, Preferences can be found under the Edit menu). In the History States field, lower the number from 20 (the default) to 2 and click OK, then your Batch will run like a greased pig. Don't forget to increase your History States or change your History Options back after you're done batching or you'll be down to two undos.