getting great fast results using this option but have some negative values in some small areas in the render. Seemingly where I'm getting very little indirect contribution. Although it's present in the diffuse, It's mainly in reflect.

Also it's only in the diffuse and reflect for the gilight, not the other lights I have in the scene.

I can get rid of them by increasing the trace bias but get unwanted noise elsewhere.

As they are in the dark areas of the reflect aov I can fairly easily clamp them out in comp but it would be great to remove from the render.

Any ideas?

Thanks

Chris