Long-running, high-end Excel-based applications that I developed years ago and that run beautifully in Excel 2007 and 2010 look like Amateur Hour in Excel 2013 and 2016 beca
I wanted to leave a comment but I am not allowed to do so. Without a code sample it is very dificult to understand your problem (please see https://stackoverflow.com/help/how-to-ask and edit your question appropriately.
Here are some ideas: - Check if your code calls for code in a different procedure, maybe the Application.ScreenUpdating is turned on outside of the procedure. - Try this at the beginning of your procedure:
Application.Calculation = xlCalculationManual
Then, at the end of the code set it to:
Application.Calculation = xlCalculationAutomatic
It might help; however, without a code sample it is very difficult to properly help you.