Hey Marky Mark, this is pretty nice. I ran the level and had one nice fluffy white cloud "the particle cloud". And one near black cloud the "model cloud" I don't understand why it looks that way but the other cloud is great.
I added another model of my own about twice the size of your original "particle cloud" model and was still getting about 50-60 fps of fluffy clouds. Very nice I'll work with it some more; thanks allot for the contribution.
Very cool.

Guardian