https://forums.autodesk.com/t5/autocad-lt-forum/using-a-block-several-times-makes-my-drawing-big-and-slow/m-p/11249176#M10499 <P>Does your block have multiple visibility states?</P> <P>&nbsp;</P> <P>If it does this is the problem.</P> <P>&nbsp;</P> <P>If a block has multiple visibility states when you put it in a drawing you are putting in "ALL" the linework again even if you can't see it.</P> Tue, 21 Jun 2022 16:19:00 GMT h_s_walker 2022-06-21T16:19:00Z https://forums.autodesk.com/t5/autocad-lt-forum/using-a-block-several-times-makes-my-drawing-big-and-slow/m-p/11249141#M10498 <P>Hi, I made a drawing today which consists of approximately 50 copies of the same block and some additional lines, which makes my drawing really big and slow. How can I solve this? My feeling says using a block should save memory and thus make AutoCAD work better, but that doesn't seem the case. Thanks for your answers!&nbsp;</P><P>&nbsp;</P><P>Greetz, Martin</P> Tue, 21 Jun 2022 16:03:56 GMT https://forums.autodesk.com/t5/autocad-lt-forum/using-a-block-several-times-makes-my-drawing-big-and-slow/m-p/11249141#M10498 martinSFWWX 2022-06-21T16:03:56Z https://forums.autodesk.com/t5/autocad-lt-forum/using-a-block-several-times-makes-my-drawing-big-and-slow/m-p/11249176#M10499 <P>Does your block have multiple visibility states?</P> <P>&nbsp;</P> <P>If it does this is the problem.</P> <P>&nbsp;</P> <P>If a block has multiple visibility states when you put it in a drawing you are putting in "ALL" the linework again even if you can't see it.</P> Tue, 21 Jun 2022 16:19:00 GMT https://forums.autodesk.com/t5/autocad-lt-forum/using-a-block-several-times-makes-my-drawing-big-and-slow/m-p/11249176#M10499 h_s_walker 2022-06-21T16:19:00Z https://forums.autodesk.com/t5/autocad-lt-forum/using-a-block-several-times-makes-my-drawing-big-and-slow/m-p/11249338#M10500 Hi, that sounds logical, but I can't find out if it has. I'm using a block<BR />someone else created and never use visibility states myself. The block<BR />itself seems to consist of two blocks, does that say anything? Or is there<BR />an easy way to remove multiple visibility states? Some Googling and trying<BR />didn't work out unfortunately.<BR /> Tue, 21 Jun 2022 17:44:39 GMT https://forums.autodesk.com/t5/autocad-lt-forum/using-a-block-several-times-makes-my-drawing-big-and-slow/m-p/11249338#M10500 martinSFWWX 2022-06-21T17:44:39Z https://forums.autodesk.com/t5/autocad-lt-forum/using-a-block-several-times-makes-my-drawing-big-and-slow/m-p/11249391#M10501 Share your DWG file here: if it's slow for you it ought to be slow for us as well.<BR /><BR />Share a screenshot of your ABOUT command pop-up too when you get a chance. Tue, 21 Jun 2022 18:08:38 GMT https://forums.autodesk.com/t5/autocad-lt-forum/using-a-block-several-times-makes-my-drawing-big-and-slow/m-p/11249391#M10501 pendean 2022-06-21T18:08:38Z https://forums.autodesk.com/t5/autocad-lt-forum/using-a-block-several-times-makes-my-drawing-big-and-slow/m-p/11250587#M10502 <P>Gentlemen, thanks for your reactions! Instead of going into Autocad-details I usually don't need, I figured the easy workaround was to open the block, manually redraw the parts I need and deleting the old lines. This reduced drawing size from 45 MB to 0.5 MB, solving my problem. And learning me a valuable lesson!&nbsp;</P> Wed, 22 Jun 2022 07:35:38 GMT https://forums.autodesk.com/t5/autocad-lt-forum/using-a-block-several-times-makes-my-drawing-big-and-slow/m-p/11250587#M10502 martinSFWWX 2022-06-22T07:35:38Z https://forums.autodesk.com/t5/autocad-lt-forum/using-a-block-several-times-makes-my-drawing-big-and-slow/m-p/11250649#M10503 <P>Definitely sounds like there was a lot of redundant lines in that block</P> Wed, 22 Jun 2022 08:02:30 GMT https://forums.autodesk.com/t5/autocad-lt-forum/using-a-block-several-times-makes-my-drawing-big-and-slow/m-p/11250649#M10503 h_s_walker 2022-06-22T08:02:30Z