Weird shaped shadows from masked material when baked

Hi everyone,

I have an issue I can’t figure out how to solve. The problem is that I have a perforated material that I need in my scene with pretty small circular holes on it that is casting weird like Assassin’s Creed logo shaped shadows on the floors and walls. You can see the example in the picture below.

I don’t know if this issue is caused because the holes in the mask are too small or something else.
The material is set to be Two Sided, and I have tried to set the mesh itself to have Shadow Two Sided checkbox on and that didn’t fix the issue. The lightmaps for this object are yellowish so it means that the resolution is a little bigger from perfect. I have tried to change the resolution of the lightmap to bigger or smaller and I get the same result. I have tried to change the compression method on the texture too, went to sharpen methods and no changes.

Could this be a streaming texture casting shadows? I don’t know how to test that out. Any help or idea is appreciated