Negative light wierdness

Just a quick question.
I have a character, which is basically just a black smoke particle that disables any nearby lights and is surrounded by darkness.

I created a light inside of the particle editor, and can make it into a negative light, however I get these wierd shimmery outlines on the edges of my meshes, presumably because the renderer was not designed to deal with negative lights.

I figured maybe it was just the reflection on objects, so I tried to change roughness value, which you can’t do in cascade.

So I added the light inside the character blueprint itself, and negated the intensity value inside of the construction script by multiplying the intensity by -1…which works, but I get the same wierd shimmering.
I then turned roughness to 1.0, but this did not help at all.

Does anybody have any ideas on how I might be able to avoid this strange shimmering effect?

Thank you :slight_smile:

And below is the effect I am talking about.