Ok, I was in the editor and for some reason I pressed F5. Now this is firs time i have seen this, and it’s look my my scene that I created has some really bad performance warnings.
@anonymous_user_563791c6 Your question is a bit vague, what is the picture of? If it’s foliage, then you might expect it to look like this. If it’s a material applied to meshes, it’s time to make the ‘shader’ more efficient ( ie, make the material simpler ).
The red to white showing when you use translucent materials are normal because there is always a lot of redraw happening. If you load the project Soul: City from Epic you will notice the same with the rain and steam there, the background aswel.
It is a whole rainy level with a city. There you will see the same behavior when you play F5, because this is what is expected for any effect which uses lots of translucency like rain, fog, foliage, there is no way to get rid of it.
People usually try to retain the rainy area following the player so the area where the effect runs is small and you don’t need too many particles at the emitter. Another approach is to transform the rain in a postprocess effect. You control better the bad areas, but definitely you can’t get rid of it, but live with it in a comfortable way in your project.