I’m currently on a project to improve the performance of a particular workbook.
In worksheets that have a large amount of formulas, this behavior can drastically slow down your macros.
If your workbook is formula intensive, you may not want Excel to trigger a recalculation every time a cell value is altered by your macro. Calculation property to tell Excel to switch to manual calculation mode.
When a workbook is in manual calculation mode, the workbook will not recalculate until you explicitly trigger a calculation.
The idea is to place Excel into manual calculation mode, run your code, and then switch back to automatic calculation mode.
Setting the calculation mode back to xl Calculation Automatic will automatically trigger a recalculation of the worksheet. Calculation = xl Calculation Manual You may notice that when your macros run, your screen does a fair amount of flickering.
This flickering is Excel trying to redraw the screen in order to show the current state the worksheet is in.Unfortunately, each time Excel redraws the screen, it takes up memory resources.In most cases, you don’t need Excel using up resources to redraw the screen each time your macro performs some action.In addition to setting the calculation mode to manual, you can use the Application.Screen Updating property to disable any screen updates until your macro has completed.This saves time and resources, allowing your macro to run a little faster.