I am using AutoCAD 2014. there is problem in few files when i open the drawing its take long time. even i use the command dgnpurge. but still problem. is there any good solution to solve this problem.

Did you use the command line version of AutoCAD's Purge command that is preceded by a dash like this:-purge...then purge Regapps first?Did you then follow that up using the same command but doing a Purge > All?Did you run an Audit on the drawing?Are xrefs being used?Are layer filters being used?Does your system meet the minimum recommended specifications as set forth by AutoDesk?Are you working with a networked version of AutoCAD or a standalone version?Is your program up to date with all service packs?Are you seeing any error messages?Have you checked the paths to all support files?