Well, I am used to minimize the task-manager by now ;-) Bryce 5.5 resets itself to normal priority each time I start a 'Clear and render'. It is annoying, as even programs with not much need of resources (firefox for example) have problems working correctly. I have an AMD Athlon XP 2800 with 1GB of RAM which is sufficent for running Bryce5.0, terragen and PhotoshopCS at the same time. Bryce 5.5 ruins it though. Regards, Volker Harun