In the process of using cad, you will find it very stuck. The main reason is that the memory of the file is too large, which increases the burden. This can be improved by deleting useless data and adjusting the model. The details are as follows:

1, drawing more graphics files becomes larger and larger, which can reduce the file size by using the command PU space to delete useless layers, blocks, labels and words in the file;

2. If the file gets stuck when you exit quickly after editing, you can use the command Z space A space, and then use RE space to regenerate the model;

3. Another is that the waiting time for copying and pasting is extremely long. You can try using-scalelisteditspace r space y space, and then you can cancel the current instruction. This is because there may be more useless elements in your file, so copying will also get stuck;

4. We can also try using F7 or F9 to turn off the grid or snap. You can also save it as a DXF file, which will make the stamp of the education version disappear and remove many useless parameters loaded.