Light Function/Underwater Caustics Problem

Hey everyone,

I have a question/problem I try make the underwater caustics like Exilog in his video with the Light Function.

When I put the light Function material to the Directional light it didn’t work, when I put it on Spotlight or Pointlight it will work in a small area, what make I wrong?

The other question is, when I open The Center, The Island, Ragnarok I don’t see any Caustics, did Wildcard deactivate it? I’am sure last year, they were still there.

Can anyone help or Know a Answer?

​​​​​​​Thanks =)

Sry for my bad English =) it’s late xD

Solved, I do not know why, but ingame the caustics are displayed, but not in the editor, anyone an idea?