Smart Material: Aliasing effect Issue between S.Designer and S.Painter

I have a somewhat annoying issue, let me explain: I created a Smart Material in Substance Designer and I'm trying to apply it to a flat surface in Substance Painter... But I'm getting this "aliasing" effect on the material which doesn't appear in Substance Designer! I noticed that it's present on the base color and the normal map.

Does anyone know where this might be coming from?

Thanks in advance !