Hi Daniel On Sunday 23 January 2005 05:51 am, Daniel Pimley wrote: > Thanks! Fullscreen mode fixed it. But I don't understand how Swiv and > Flashback can play perfectly in windowed mode, while many other games > become completely unplayable. If E-UAE just serves SDL with frames to > display how can the performance of SDL vary so much depending on what > game I run? It probably depends on how much of the screen is updated at one time. If the game only updates small amounts of its display per frame (for instance, only the areas where sprites have moved), then UAE will only update lines containing the changed areas. Cheers, Rich