I rendered an image with some blob objects made of metal. I used reflection
type 1 and ior 9 to get fresnel reflection, but I had to kill the render after
57 hours...
The very same scene without metal textures took one hour to render and I don't
think the reflection should have effected the render time so strongly...

Mick Hazelgrove wrote:

> I've been having similar problems which seem to be related to ior. I havn't
> been able to test the scene in  3.1 because it uses megapov features but
> with ior enabled render time rockets and even freezes whist without it the
> scene renders in minutes.
>
> Mick

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