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And surprise - P4 renders is quite good

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All renders are made in P7 with infinite lights, no shadows

When using a tile node, you normally need to decrease the "Min shading rate" value in the render settings, because the tile node has such high detail, and the renderer might not catch it. If this would be an image texture, you could use texture filtering, but the tile node does not have this. I guess the best approximation for filtering the procedural nodes is using a low shading rate (and antialiasing using pixel samples). You might also try to increase the smoothing of the tile node (when it has nonzero mortar).

I find it interesting that P4 renders good, however, i thought it does not support nodes?