If you're working on a long document and need to place a number of hi-res CMYK images into it, you may find that InDesign begins to slow down and down and down. So, the closer you get to your deadline, the slower everything becomes. Awful. This video shows an easy way to deal with it, so no matter how many images you're dealing with, InDesign never slows down at all. Requires Adobe Photoshop.