Why_Do_I_Die:
I am afraid I cannot answer this sufficiently. Up to now I always had fps at my monitor frequency. So I think I did not produce any heavy FPS hungry scenes so far. But I will do in the future.

I checked another of my machines in C4. I tweaked the amount of light reflections a bit more this time with some micro-facet options of the shader. Very interesting stuff. It is really fun because you can do it in the material editor and see changes in real-time in your scene:




Models, Textures and Games from Dexsoft