Reply to Re: blender
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You don't usually need to subdivide too much. (keeping track of all those verts is what slows you down.) Try a simpler mesh with 'AutoSmooth' on, and if needed turn on 'subserf' when you do your rendering. (Subserf is in the 'modifiers' pane.) Subserf can be applied to the mesh permanently, but its handy to just use it without applying it.