Render time shadow caustics enabled much longer, about 10x

Question

In my machine(M1 MacBook Pro) enabling the shadow caustics results in a very slow render, I'm using the sample file from the video and Blender 4.2.1

Might be something incorrect on the scene configuration?

Answer 1 · 2024-10-09T09:25:21Z

Martin Bergwerf replied October 9, 2024 9:25am

Hi Carlos ffmcarlos ,

That sounds absolutely normal to me. It's a very expensive effect in Cycles. Nothing to worry about, just be careful when you use it.

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Answer 2 · 2024-10-09T12:35:26Z

Omar Domenech replied October 9, 2024 12:35pm

Yes exactly, caustics are famously very expensive to render. That is why people do all sorts of hacks to get as good as caustics as the real thing. If you ask me when doing 3D and CGI is all fake anyways, so if the fake versions looks good enough, use it and move on.

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