To ensure stable performance, your hardware should meet these AutoCAD System Requirements :
The 18.1 update focused on workflow automation and improved external file handling. Autodesk AutoCAD 2018.1
When you insert a named view into paper space, AutoCAD automatically scales it, sizes the viewport, and locks it for you. To ensure stable performance, your hardware should meet
Improved functionality for importing PDF geometry, including better scaling and a preview image to help identify files before importing. To ensure stable performance
You can create drawing views by simply drawing a box around a specific model area.