Vertex Shader looks broken with Niagara Mesh Renderer

Hello, I have a material that is offsetting vertices of a mesh with help of the texture coordinates. When I place a mesh in the scene and add the material, the vertex offset happens smooth like a gradient. But when I put the mesh in Niagaras mesh renderer and assign the material, I get a result that is very jagged and not smooth looking. It looks as if the vertex offset would only updates with 3 fps and unevenly.

I noticed that this also happens to the mesh that is not in Niagara when I change the material from masked to translucent.

Any help/ideas why this happens would be appreciated a lot!