Strange artifacts from baked lightning

Hello guys! Made some models from magicka voxel, for performance reasons i chose baked lightning.
Unity makes uv, lightnings goes on mode, casts shadow, but… i have strange polygon “gaps”, which could be acceptable, but in camera view you see black lines.

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I tried almost every lightning settings.
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If its model problem, what can you suggest?

I believe you need to read into light probes