AutoCAD 2010/2011/2012 DWG Format

[#1]

I've been running into an issue with the Layer Properties Manager recently in AutoCAD 2011. It frequently becomes very slow by refreshing the layers multiple times when a selection is made within the Manager. The refresh is so slow, I can count each layer as it is diplayed, and sometimes it refreshes as many as 5 times for each selection. This is painfully slow, even on drawings with relatively few layers.

This does not occur with any other feature in AutoCAD.

Anybody have any ideas?

[#2]

Try CLASSICLAYER. I had to make a button for it, as I'm in and out of layers constantly, and the new layer dialog was making me insane.

[#3]

You might also want to check for the layer filter bug that infiltrated hundreds of thousands of drawings around the CAD world - every time you XREF'ed or inserted all the previous layer filters would get stacked up. The bug has been fixed, but some of those drawings still contain that junk. Do a search for "layer filter delete" and you should get numerous solutions.