Karim Joseph writes: In Blender 2.93, the new cycles persistent data feature can drastically speed up render times in heavy scenes. It is an upgrade from the previous persistent images. In this tutorial we have a look at the new feature and how we can use it.
from BlenderNation https://www.blendernation.com/2021/04/28/faster-renders-in-blender-2-93-new-persistent-data-feature-promoted/
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