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Pre calc of Irradience - do i need reflections?


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Hi, not sure if this is a stupid question, or if its been answered before.


When creating my irradience maps for animation (only cam animated and done on nth frame), i set up a render with the dont render final image, but when i have any interpolation in my reflections or refractions, it still does those refl/refr pre-calcs.


If i cut out refractions reflections in the global switches, it doesnt calc any GI through glass, so this is no good, but how can i stop those interpolative passes? do i even need to? It just seems to extend my prepass time.


Although this is not really causing any problems, i feel i may be going about this the wrong way.



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