UCSDETECT

how to stop autocad selects solid surface automatically UCSDETECT (System Variable) Controls whether dynamic UCS acquisition is active when creating objects involving 3D planar surfaces. Type: Integer Saved in: Registry Initial value: 1 You can align the UCS dynamically when your cursor hovers over a planar face on a 3D solid, a planar mesh element, or a planar point cloud segment while as you create an object. Note: Dynamic UCS alignment does not detect planar surface objects or 2D geometry. Value Description 0 Not active 1 Active Tip: If performance is an issue, you might want to set UCSDETECT to 0.