I am making a site model, and I have imported the street lines as DWG. I have placed them o top of a rectangle base. When I am zoomed out, all of the lines are perfectly visible. However, when I zoom in, the lines are disappearing. I have tried many solutions but cannot get round to solving the problem. Any help would be much appreciated! I have also attached an image and a google drive link to my model: Base and street lines.skp - Google Drive
Thank you in advance for any replies !