Thanks for the responses, the reason why it it goes so fast is it because of like plaster being shaken off the wall during an earthquake or bomb strike whatever thats why you see the cracks in the wall forming, its in its WIP so the dust particles and such haven't been added yet, then it will make more sense. The dust will come off with the particles and as they go down a dust cloud comes up as if they were hitting a floor etc.

Do atleast one thing a day that scares the hell outta ya!!