My way of importing a DWG in AC is as follows:
1. First use the "Place" command instead of import and if you can, avoid
exploding the drawing. This should speed things up. If you need to explode it then you will need to figure out what layers turn on/off so you see only what you need. The only limitation if I remember correctly is that you cannot "magic wand" particular lines since they are not independent.
2. Place the drawing in a "worksheet" and crop it to the size that you need by clicking on the corner nodes. If it is a large area you could split the DWG in different worksheets by copy/paste the Placed DWG and moving the cropped area.
3. Use "Trace and Reference" to show only the relevant part of the DWG/worksheet in your story.
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Hope this Helps
Eduardo Rolón AIA NCARB
AC27 US/INT -> AC08Macbook Pro M1 Max 64GB ram, OS X 10.XX latest
another Moderator