Hey,

I am in the middle of a dynamics showing cloud/smoke from the rear of an asteroid is it hurtles through space.

But I seem to have hit a snag....

Asteriod 5 Mov (Use WMP to play)

the bump map seems to flicker as it plays, as if every frame has a difference bump map setting. I am not using default lighting, but 2 area lights to light the scene. motion blur has been added also (default settings)

Does anyone know why this is happening? Is it the lighting type I am using?

Thanks

PS. Here's a still image