VBA: Turn Off – Turn On Calculation
You can turn off automatic calculation with a macro by setting it to xlmanual. Use the following piece of VBA code:
Application.Calculation = xlManual
To turn on automatic calculation from VBA:
Application.Calculation = xlAutomatic


If the above doesn’t work for you (it didnt for me) try
Application.Calculation = xlCalculationManual
..
Application.Calculation = xlCalculationAutomatic