Environment Fog + 3D Texture renders slow

[X14Halo]

I can get the environment fog working great, but as soon as I plug in a 3D fractal to get some noise, the render time goes through the roof. I remember reading that you shouldn't plug it into density because that slows it down alot, so I tried plugging it in the color slot and it is just as slow. Any ideas?

[mr furious]

Check your DMV settings I had very slow renders at fully adaptive (1.0). Try turning down a bit. That might help.