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Completely lost trying to bake normals in substance painter

Hi! Im new to this forum and 3d in general.
Im trying to texture a plane I made in blender using substance painter. Im having real trouble understanding the whole process of baking the maps (the normal map particularly) and I get the weirdest artifacts that I've been trying to fix for the last couple of weeks. I hope someone can help me figure this one out!

This is the model Im trying to texture:
High Poly

Low Poly

The UV map for the low poly (Have I done it correctly?)

These are the settings that worked best so far

And these are the problems Im talking about:

  1. On some of the straight edges of the flaps I get this (even though both the "low" and "high" poly meshes for this particular part are exactly the same!)
  2. Some of the ridges look uneven, others look fine. Like these on the lower wing
  3. Some edges on cylindrical shapes look uneven as well. Like this, right next to one that baked completely fine
  4. Too many jaggies! Even when I crank up the resolution to 4k it looks like ass. Is it supposed to be like this?

Thank you for reading my post!


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