Substance painter shading Issue after bake

[defaulttrjagz34ipi9]

Hello , im a beginner and have searched a lot these past days

but couldnt get an answer on what im doing wrong .

After Baking in Painter I get strange Triangle Artifacts and cant wrape my head araound why and what im doing wrong 

[naser5E1A]

hi

i see the problem in your modeling that cause this issue. the edge that i signed cause this problem (i think).

you can add some edge loops in your model (The way you think is right) then uv unwrap it again. i think this is the solution.