A user on the Chaos Forums was rendering a swimming pool in Max 2021. Standard caustics took 45 minutes per frame. They switched to a workflow:
Automatically creates "dappled light planes" that you can move, rotate, and scale to position shadows exactly where needed. dappled light generator for 3ds max 20182023 f better
: Fully compatible with Corona Renderer and V-Ray . Key Features : A user on the Chaos Forums was rendering