Weird faces on retopologized mesh

Question

does anybody know what could be causing these artefacts?

So far i have tried different render engines, using cage/no cage to bake, trying different uv seams, adding more detail, but to no avail...

!!!EDIT: so I figured it has nothing to do with baking aspect, the weird faces still persist even when no normal map or material is applied.

Here is the file with retopologized version: enter link description here

@Crantisz, Yes I did, but check the edited question, since I figured it has nothing to do with normal map. — ap8079, Nov 09 '18 at 22:07
Hm, it's looks like a terminator problem - try to make lights bigger. If it doesn't help, can you provide a (part of) the file? — Crantisz, Nov 09 '18 at 22:12
@Crantisz Ok I included the file. Increasing lights size seems to do something but it doesn't solve the problem I'm afraid. — ap8079, Nov 09 '18 at 22:18
@Crantisz It might in fact be the problem in lights size as the model doesn't appear to have those problems in Unity environment. — ap8079, Nov 09 '18 at 22:22

score 0 · Accepted Answer · answered Nov 09 '18 at 22:27

Well, it's definitely terminator problem. It's one of "problems" of Cycles render. To avoid it, you should make lights bigger or/and add some subdivisions on model.

No artifacts with subsurf at level 1:

But if you want to export it to Unity, this problem doesn't appear in it. It's a problem of ray-traced renderes.

Weird faces on retopologized mesh

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