Problem caustics

[smallrendering]

Hello

I do not understand I put the caustics only on the water texture but I find myself with caustics all over the scene and on the other textures. can you help me?

[maru]

The are reflective and refractive caustics. Unfortunately your scene may be a bit too complex to efficiently render caustics. Is it the same if you zoom in on the pool?
You can learn more about reflective and refractive caustics and about our caustics solver in general here:
Text+video - https://coronarenderer.freshdesk.com/support/solutions/articles/12000056738
Blog - https://blog.corona-renderer.com/corona-renderer-4-for-3ds-max-released/