Olympia London Windows 3 Show - Charles Moir was demoing XARA STUDIO - a notorious CorelDRAW file that could render in exactly the time it took to visit the loo and pop the kettle on.
I can remember seeing that demonstration David. If I recall correctly it was a rendering of a red barn surrounded by conifer trees. As you state Corel Draw was painfully slow whilst Xara rendered it in seconds.