I have a problem with rendering a certain scene in the cycles engine. When I press the render button, it seems like before any tiles are rendered, Blender stays stuck at the grey screen for quite a long time before starting to render any tiles, where it proceeds to render at a reasonable speed. Even when I change from solid view to rendered view, Blender stops for a little while before beginning to render. Is there a certain cause for this? My scene has about 150,000 verts in total.
Any help would be greatly appreciated. Thanks!