Excel sheet 1 no sheet2 card.

1. Are there many formulas? If yes, it is suggested to change it to manual operation.

2. press CTRL+SHIFT+END to see the last few lines. If there are nearly 65,000 or more, delete the blank lines and save them.

3. Whether the format of duplicate value prompt is set for the whole table. If so, it is recommended to cancel the formatting of the duplicate value prompt.