Adaptive Tessellation
The adaptive_error setting on geometry is off by default (set to 0) resulting in uniform tessellation. Depending on the mesh_resolution setting, the geometry may be over-tessellated for it’s distance from the camera. Turning adaptive_error on sets the maximum allowable difference in pixels for subdivison mesh adaptive tessellation. Each final tessellated edge won’t be longer than n pixels if adaptive error is set to n. Adaptive tessellation is not supported for instances.