I build my own custom computers this particular one is running at 1870mhz over 1gig of ddr ram and is watercooled, Bryce is just a slow renderer anyway and converts ok but the models just end up broken up like i said with large meshes/file sizes. Small size meshes are just fine, Bryce4 is definitly the problem here, I think if bryce was a faster renderer or converter of differnet file formats then the problems would be much less. As for Cinema4d its maybe the fastest renderer out there or one of the fastest.The mesh above is the model i tried to import.(still wip).