To improve batch processing performance, in the History panel,select History Options from the fly-out menu and deselect Automatically Create First Snapshot. Depending on the length of your action, you might also want to reduce the number History States in the Preferences > Performance panel. Just don't forget to increase the number of states when you finished batch processing!

Posted by Julieanne Kost at 5:02 AM | Permalink

The Batch command can be recorded as part of an action to perform multiple batches in sequence. In addition, you can batch process multiple folders without reorganizing them on the hard drive - simply create aliases within a folder to the other folders you want to process, and select the Include All Subfolders option in the Batch command dialog box (or use a droplet).

Posted by Julieanne Kost at 4:59 AM | Permalink