What artifact?

The tiny bit of white on the side of the waist? I suspect texture filtering is the culprit. Whoever made the color map didn't know the right procedure. They forgot to color outside the lines.

You can set texture filtering to None in all the Image_Map nodes in the material.

or

You can decrease the rendering setting Min Shading Rate to well below 1 - usually .2. This will likely increase render time.

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Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)