Heightmap to normal conversion looks very crispy

[=WAWA= Mustaherukka Gaming]

Hellou. I am trying to convert a height map into normal map with the bump node, however the normal comes out as "crispy" and very pixely. But then converting the same height map with Krita yields a normal map that isn't crispy and pixely. Why does the bump node do this? (Heightmap was created in krita, and then loaded into blender as image texture)

[=WAWA= Mustaherukka Gaming]

Managed to fix... The fix was a completely black background... :/