Pixel buffers (aka "pbuffers") can be used to significantly increase the speed of capturing a view window image for copying to the system clipboard, for saving an image of a view window to a file, for printing an image of a view window or for making a movie from a series of view window images.

To enable the use of pixel buffers in GaussView, check the "Use Pixel Buffers" box in the "Image", "Print" or "Movie" section of preferences.

Pixel buffers are supported on most systems with modern graphics cards / chips and up-to-date graphics drivers.

If you try using pixel buffers and have problems capturing images, try updating the drivers for your graphics hardware. If you still have problems, just uncheck "Use Pixel Buffers" in GaussView preferences.