'Line' artifacts in diffuse bake

I’m trying to bake a diffuse layer for a shader, which is a color ramp based on a pointiness node. (attached screenshot of nodes)

When it bakes, it creates lines crisscrossing the image, outside of and across the uv layout. When I realized that there was a problem, I stopped the bake(attached screenshot).

Any idea what’s going on here?

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EDIT: I’ve narrowed the problem down to the geometry of one of the objects. Same process, one object at a time, one working as expected, the other not so much.

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