DWG grows when import to AC

[Anonymous]

Hi all

I have four DWG which are all below 1 Mb in size. When I import them in Ac12, I get each file around 25 Mb, so when I copy all on the same floorplan I get over 120 Mb size pln. My machine gets terribly slow. I have tried line and fill consolidation but with not much reduced file size. Any sugestions?

[Anonymous]

I think I got it. The DWG is full of objects, which are made of polylines. There is hundreds of chairs like this on the picture. Is there an easy way to replace them or to reduce the polyline segmentation? I guess not

Stil I dont get it, how the file in DWG is so small compared to pln. It is just 2D lines, fills and texts?