Si, how's things? Cheers for your thoughts, I think that it seems to slow down as it climbs the hill because there's nothing on the hill (trees etc.). I'm not entirely sure why I did this but I've left populating this area until I'm happy with the area outside the hospital walls. Once it's got the bits and bobs in place I hope it'll look OK, if it still seems too slow, I'll have a shot at the gust of wind idea. Anyway, I've been filling out the scene with some more trees, fences and a big red barn. I've also had a bit of a play around with moving the moth about, you can watch the results.... HERE (2.5Meg) Once again apologies for the quality 40 seconds video into 2.5Meg = fuzzy! Any thoughts that anyone has are always appreciated., Cheers, Mat.