Been mucking around with terrain and models only and most times it works great then somewhere along the line with no editing at all, the whole lot craps out and 3 months goes down the drain again!

The nasty this time is the camera.

Somehow it is conflicting with stencil shadows and laggs as if it is so poly souped up that I wonder whats the point of continuing, (FPS count stay good though).

Throw away poly collision though and you are screaming.

So it works well but be prepared to do a lot of work if your going for per poly collision results, then you have to get into sub-scene managment with an awesome amount of LODs to make.