I was scanning through the Autodesk newsgroups and found this post about
Slow performance with clipped xrefs and though I could help.
"We are having performance issues with drawings that have multiple copies of an
xref that is clipped in various ways. ... AutoCAD slows down substantially as
the number of copies of the clipped xref increases, to the point that it can
take 40-50 seconds to change tabs. It seems that the regeneration of the
paperspace tabs is the problem because once they are cached switching is almost
instant."
Here was my suggestion:
Using INDEXCTL set to 3 can improve the performance up to 10 times I have seen, especially in combination with xrefs, xclip and viewports.
"INDEXCTL seems to do the trick!!Dropped tab swapping times from 40-50
seconds to only 4-5 seconds.This is a life saver... thanks guys."
The Autodesk
User to User Discussion Groups are a valuable asset. Another one is
AUGI Forums.
Posts
I believe that for this to work best, you need to do the following:
ReplyDeleteIn your big xrefs, set INDEXCTL to 2 so they will save indexes of their layers and locations (spatial). In all other drawings, set INDEXCTL to 0.
In your referencing drawings, set XLOADCTL to 2 so they only will load the parts (spatial and layer) of the index they need.