Top view render is grainy

My renders come out extremely noisy and grainy, i’ve never really had this problem before but this is a model I purchased online, is there any thing I can do? I’ve tried changing lights and using other programs but I’m fairly new and I cant quite figure it out. The perspective view turns out ok still grainy. bad renders.3dm (207.8 KB)

Welcome @karissaconlon,

Unfortunately, your mesh is pretty bad, which takes its toll on the visualisation.
You can select the mesh and use the MeshRepair command to analyse it.This will tell you what’s wrong. You should join the mesh first though.

Do you absolutely need the mesh?
If not, you could rebuild the object as Nurbs geometry, which would be pretty straightforward in Rhino.