Curvature map is sort of restricted to the resolution of your hi-poly mesh. You can either subdivide your hi-poly more, or you can just increase sampling radius beyond the limit of slider. Try turning off Relative to bounding box and increasing sampling radius to 2.
Curvature map is sort of restricted to the resolution of your hi-poly mesh. You can either subdivide your hi-poly more, or you can just increase sampling radius beyond the limit of slider. Try turning off Relative to bounding box and increasing sampling radius to 2.