Please help. I creatted procedural parquet. It looked correct, but I do not know why there are black spots.

Render in P7, min shading rate = 0,1 rb = 4, pixel samples = 6 irradiance = 70, no shadows.

I tried change lights parameters - numbers of lights, shadow min bias, type of light (infinite, point). I checked/unchecked normals but I still have dots on the floor :-/