https://community.graphisoft.com/t5/Modeling/Calculating-Split-Polygons/m-p/267168#M139470 No, there is no problem with your file.<BR /> This message is just something that informs you of a step during 3D generation. You don't have to worry about at all. Tue, 13 Feb 2018 20:37:25 GMT Laszlo Nagy 2018-02-13T20:37:25Z https://community.graphisoft.com/t5/Modeling/Calculating-Split-Polygons/m-p/267167#M139469 <DIV class="actalk-migrated-content"><T>I see that ArchiCAD is spending lots of time "Calculating Split Polygons"; does this indicate I have some models which are somehow "split"? , or is everything split in a way?<BR /> <BR /> Does it indicate a problem with one of my models?, if so, how can I troubleshoot it? <BR /> <BR /> I'm using ArchiCAD-21.</T></DIV> Tue, 13 Feb 2018 12:23:55 GMT https://community.graphisoft.com/t5/Modeling/Calculating-Split-Polygons/m-p/267167#M139469 Anonymous 2018-02-13T12:23:55Z https://community.graphisoft.com/t5/Modeling/Calculating-Split-Polygons/m-p/267168#M139470 No, there is no problem with your file.<BR /> This message is just something that informs you of a step during 3D generation. You don't have to worry about at all. Tue, 13 Feb 2018 20:37:25 GMT https://community.graphisoft.com/t5/Modeling/Calculating-Split-Polygons/m-p/267168#M139470 Laszlo Nagy 2018-02-13T20:37:25Z