NExS lets you decide whether or not to recalculate the spreadsheet after you make changes that affect other cells or whenever the sheet is initially loaded. NExS automatically recalculates the spreadsheets in both cases if Recalculation Mode is set to Automatic.
However, this can be time-consuming for large spreadsheets, especially those with graphs that are automatically recalculated as well. If recalculation is occupying too much time, you can turn automatic recalculation off. NExS will only recalculate upon explicit request.
To turn automatic recalculation off:
To manually recalculate a spreadsheet, select Recalculate from the Tools menu or press [F9] on the keyboard.