GPU Particles Collision Limit

And there is some Volume to Block it? I´m developing a complete weather system, fully dynamic, to use on exterior/interior scenes.
As some games are open world, so as to produce what I think, what would be the solution to be no rain inside the houses, but still raining to look out the window? If there was some kind of volume, to block, would be perfect.

Here is my Weather System Project: LPV + TOD (Light Propagation Volume + Time of Day) [WIP] - Architecture - Epic Developer Community Forums

In addition, I am suffering with various types of problems with Cascade.

  • I can´t make Clouds with Shadows. I mean realy hight clouds (z 150.000).
  • When I turn my camera, shadows are flicking.
  • In some angles, comes self shadow acnes.
  • Realy bad performance with some storm clouds (huge and dense clouds) tryes.
  • Rain leaking through roof.
  • Probably when I have blizzard, will leak through the walls.

There is a prediction of Niagara? And about Raytraced Shadows casting shadows on Terrain?

(sorry for many of topic questions, but I must take advantage of this direct support of Epic that you are giving.)