When interpreted as an absolute SubD display density, each SubD quad will generate 256 display mesh quads in a 16x16 grid and each SubD N-gon will generate N*16 display mesh quads. When a SubD has more than 2000 faces, adaptive DefaultDensity is reduced to adaptive MediumDensity. This is the default value for creating mesh approximations of SubD surface. When treadted as an adaptive setting, it produces acceptable results for most SubDs.