adp001 posted at 2:56 AM Thu, 1 December 2022 - #4450684

Try using HDRIs made just to lit a scene. Here is an Image showing "HDR Light Studio": https://www.lightmap.co.uk/dynamic_resources/webp_images/homepage/hdrls_ui.webp

Light up the scene with such a "grayscale image" and you save the heavy computing power for the bounces.

You can also take one of the typical HDRIs (e.g. from one showing a photo studio, available for free) and prevent the image from being displayed. Then only the lighting information remains to illuminate the scene.

Honestly? Amping up the bounces in my render a bit (and it wasn't even a lot, I think I had 8?) is much faster than rendering a scene as an HDRI and then using THAT as a light source.

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