and now I'm back to the render settings again. I have inserted the SILK parameter in the standard level 3 setting. The texture of the parquet is made with the maximum gloss setting, but the "silk" setting gives an imitation of matte varnish with reflections. So far, I can only do this effect in this way.
for comparison, standard render settings, glossy parquet varnish. There are no moire reflections, there are sharp reflections.
