Eliminate mesh lines in rendering

[deangelistool]

I import a cad file in the stp format into Rhino 5 for quick rendering. I use Analyze, Surface, Environment Map to get a rendering selection between polished Gold or polished Silver.
For some reason I am now getting the mesh lines included. Please tell me how to eliminate them
.

Thank you,
Eric Reshevsky

[DiegoKrause]

can you show the effect? I don’t understand

[deangelistool]

Thank you for your response Diego.

[theoutside (Kyle Houchens)]

[deangelistool]

Thank you Kyle!

[deangelistool]

Kyle,

Thank you for your response.
What is the path to that window, I do not find it under Tools,Options.
I am using Rhino 5.

Thank you
G. De Angelis

[norbert_geelen]

It’s the display panel.

[deangelistool]

Thank you Norbert!