Problem with Normal Maps baking in Maya 2017

RedlChris-_-

Hey everyone! I am trying to bake some normal maps  for my low poly grenade, using my high poly version. On the first picture you can see my high poly version. And on the other picture you can see my low version. The results I am getting are not that satisfaying. The edges on the low poly after baking and assigning the map are really ugly. Do you know how I can handle those?
Greets
Christoph

ZacD

The seams could be from having hard edges on your low poly model. Also make sure you are using padding. 

Neox

To add to what Zac said, if you use hard edges you need to split your UVs accordingly.

RedlChris-_-

ZacD you were right, had hard edges on those edges. After smoothing them the seams dissapeared. But now I am having another problem. I'm getting some black artifacts on some faces.