Resample Images Before Running Topaz Plugins
One of best advices and essential tip is to resample, actually to downsample images in most cases, before proceeding with adjustments and effects. This is essential tip in general: straighten, crop and resample (change image size) before any color and other correction. First of all if you plan to post image to Facebook for example, do you need to work with image which is 3246x2494px? No, you don't. You will downsample image at the end of process to 960px at longer edge anyway. In between Photoshop, Photoshop Elements... will need more memory to process any changes you will make on image. It's the same and with plugins, in fact it is even more critical and important to properly size image, off course if you know final image destination.
Topaz plugins and Image SizeNow, I am using most of the time 5 of Topaz plugins: DeNoise, Adjust (do not forget it is on sale through September 30th, 2013), Clarity, B&W Effects and ReStyle. Three of mentioned five plugins are generating quick smart previews (Grid preview) and process time depend on original image size: for larger images plugins need more time to generate previews. That's not all, if you want to apply more then one set of adjustments or effects (Apply button in Adjust, Detail, Lens Effects, Simplify and Star Effects on the bottom right side) then you can end up waiting without reason while adjustment or effect is applied to your huge image with tons of pixels which you will through away on export or save.
On other hand when working with DeNoise (almost every single image) I always want to navigate and see different parts of enlarged image. Each of Topaz plugins has Navigator, fortunately, but again image size contributes to overall experience and time needed to accomplish task.