curvature map has very hard edge after baking

lindsay_han

hey everyone, I met some problem when I bake curvature in substance painter, very simple geo, and I use low poly as high, but I get this hard edge, does anyone know why. Thanks! 

poopipe

Apart from the little black artefact at the bottom that looks correct to me. 

If you want softer results you need softer changes in surface direction.  A 90 degree corner is always going to give you very bright or dark value