https://communities.bentley.com/products/road___site_design/f/geopak-inroads-mx-openroads-forum/172469/cross-sections-cutting-slow-from-corridor-modelI have a rather large model, it never used to be slow ( could cut around 550 sections in about 5 minutes) but now has slowed to a halt or crash. I have tried cutting them through a &quot;section&quot; file with the models attached there and from the base modelen-USTelligent Community 12https://communities.bentley.com/thread/497146?ContentTypeID=1Mon, 17 Dec 2018 21:23:14 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:4959acb3-5a84-492d-986c-e32cc4f5b545Ryan Hoefs<p>Mark,</p> <p>The closest thing I can attribute to doing would be updating the existing terrain, and then updating the DTM.dgn via the refresh from source tool. It was after that I began to run into this. But at this point my model is tied to that DTM.dgn and any attempt to switch it for a different file results in corruption. I can&#39;t say 100% that updating the DTM from source was the cause, but that is the only thing I can recall doing that would have made a difference.</p> <p></p><div style="clear:both;"></div>https://communities.bentley.com/thread/497145?ContentTypeID=1Mon, 17 Dec 2018 21:20:13 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:4df69005-cb4c-475d-a01d-def4ea6fed5bMark Shamoun<p>Hi Ryan,</p> <p></p> <p>Has anything changed recently with your set up or addition on terrains or profile? We&#39;ve experienced the same thing, but could never pin point it.</p> <p></p> <p>Regards,</p> <p>Mark</p><div style="clear:both;"></div>