Thank you for asking.

The recommended specifications for CAD include at least an Intel Core i5 CPU and 8 GB or more of RAM. If your system does not meet these requirements, it may result in slower performance. If the drawing size is 74 megabytes, it is advisable to divide it into approximately four parts for smooth usage in CADian. Please navigate to the Utility tab in the CADian menu and use the SUPER PERGE command to slightly reduce the file size. Kindly perform all these tasks. We apologize for any inconvenience caused.

Thank you!