Artifacts in render mode (Substance Painter)

Toha

Hi! Does anyone know why render mode in substance painter gives these artifacts while painting mode looks good. What is wrong?

P.S. These artifacts also seen in Marmoset toolbag.

slosh

Are those areas triangulated on your low poly?  If not, you may have to triangulate your mesh before baking.

Toha

slosh said:

Are those areas triangulated on your low poly?  If not, you may have to triangulate your mesh before baking.

Yes, There are only triangles.