Interpolation vs Not - Drastic color differences?

[ruffstuff]

Hi,
I've been using interpolation with SSS to get a quick preview, but since I need to render an animation I've switched interpolation off. The results are VERY different and much brighter.

Does interpolation cause materials to be darker in general?

[vlado]

Ideally it should not cause differences in the brightness of materials.

Are you using GI in your scene as well?

Best regards,
Vlado

[ruffstuff]

Yes I am using GI also. Irradiance and light cache. The material light multiplier is set to 15. When I turn off interpolation it goes really flat and looks a lot brighter.

[ruffstuff]

Here is an image example of what it looks like...

[vlado]

Would it be possible to get me a simple scene to vlado@chaosgroup.com with that material so that I can check what may be wrong.

Best regards,
Vlado