Low polygons on imported step file with circle. R7

Hi I have been doing some rendering work and have imported a model via STEP from onshape to Rhino.
Most of the model seems fine but the circles seem to show up odd in shaded/rendered even though the wireframe is a circle.
Is there just some simple setting I have wrong or is this an import export workflow issue?
Thanks.


Adjust the Mesh settings in Document Properties from Jagged and faster to Smooth and slower or custom

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