I don't know - it works out of the box and is beautiful. The best solution for Gamestudio for all important light types in my opinion. And I don't think it is slow.. soft shadows are always time consuming and I really just need a few dynamic lights. So I don't know what the others did, but I feel comfortable with the performance.

I will optimize it as far as I can, sure. I'll see what I can do about an intermediate techdemo, before I pull it in my game. BTW: I use the standard-material, I don't use normalmaps/specularmaps.