To make your dappled light even better, don't keep it static. If you are rendering an animation, slightly animate the of your noise map or give your shadow-casting plane a subtle Noise Modifier . A dappled light that breathes and shifts slightly is the difference between a "3D render" and a "photograph."
If you are using (compatible with Max 2018-2023), the absolute "better" way to handle dappled light is through V-Ray Decals combined with the Chaos Cosmos library. dappled light generator for 3ds max 20182023 f better
Because a generator projects patterns rather than tracing rays through meshes, render engines choke less. "Better" means the noise clears 300% faster than traditional geometry-based shadows. To make your dappled light even better, don't keep it static
For 3ds Max versions , the most efficient automated solution is the Dappled Light Generator script by ArchVizTools. 1. The Automated Method: Dappled Light Generator Script Because a generator projects patterns rather than tracing