Drawing file slows down (delays / freezes), especially while selecting objects.
The below information might just help resolve such issues / problems....
Links:
Autodesk Knowledge Base:
ID: TS36493 - Possible causes of slow drawing performance
ID: TS71845 - Pointer performance over xref is slow
ID: TS84775 - Slow selection of objects in drawing containing TrueType fonts
ID: DL4301285 - Selecting multiline text that uses TrueType fonts slows performance
ID: TS19275 - Improving performance when picking objects or regenerating drawing
ID: TS75554 - Performance impact when toolbar transparency on
ID: TS14972 - Improve software performance
ID: TS40633 - WHIPARC system variable explained - I only include this, as WhipArc caused me issues/problems in the past when I enabled it.
ID: TS20895 - Creating spatial and layer indexes
AUGI Forum:
Complete slow down of CAD
Delay in selecting objects in 2004
Slow selection of entities.
Slow drawing
Slow in Paperspace
Drawing slows down while selecting entities
Slow Selection
AutoCAD 2006 starts to hangup when selecting Objects or issuing a command
AutoCAD 2005 delay when selecting objects
Slow response time while editing / selecting objects in one particular DWG file
Using exported ADT DWG's in AutoCAD 2007 causing machines to run slow
Selecting a Xref seems to take forever