Weird normal map behavior Any idea why is there weird lighting around the silhouette of the object? A normal map baked from high poly version is applied on this low poly model. 

These artefacts only occur on the silhouette.
Either you forgot to set the color space of your image texture node to non-color data, either you obtained a normal map in DirectX format instead of OpenGL format, in which case you need to invert the Y channel of your normal map: