
Too many constraints will slow down a drawing and stop copy and paste from working. Use the PURGE command and select all options to purge extra Line Types that may be in the drawing. Use the RECOVER command to open the drawing. This will also help reduce the overall file size and improve performance. Group objects together into blocks wherever appropriate. This will reduce the amount of system resources needed to move around within the drawing editor. If there are many layers in a drawing, lock and/or freeze those which are not always necessary to have their content visible. Repair the drawing: After updating, repair the drawing using the following methods


Install the latest updates for AutoCAD (see Install Updates, Add-ons, and Enhancements).To reduce the amount of time that the drawing takes to process the 'COPY' and 'PASTE command, try one or more of the following suggestions below: Update software
