I too have just been having problems with rendering in poser 5, I dont play with it as much as i would like to, i will try some of the suggestions made here, but i get it with having to much light, I have a decent system, i think the best solution would be for poser to make use of hardware acceleration, it would make poser run better on almost all systems straight away. I like poser it does it's job just have to work with it a bit