Bump maps causing excessive noise in the indirect

Corona Corona for 3ds Max Help Required
1

Hi,

I am working on a asset and notice really heavy noise in my indirect pass. When I turn the bump on the ground way down to a value of .02, the noise is alot less. If I turn it off altogether it’s cleaner again.

Is there any trick for treatment of bump maps in general with Corona?

One thing I was going to do was to use a Rayswitch material and for the GI contribution, just turn the bump off in the shader.

But I am just curious to see what people have to say,

Thank you

2

I thought somebody would have had a response.

Anyone?