I usually use a procedure I defined which I named “Optimize VBA”.I turn optimizations before running my macro and then turn them off after completion.This causes some additional overhead when your VBA code is executed especially if this variable is used often in your code: A known way to improve Excel VBA speed and efficiency, especially fore large Excel files, is to save your Workbooks in binary XLSB format.
Calculate: This is because looping through Objects of a Collection is slower.
It is not so much the presence of this macro that benefits your performance but the impact of the behavior it requires from you.
Option Explicit requires that you declare ALL VARIABLES.
Add this option at the very beginning of your VBA project module or class.
When working with OLE objects remember that it is more efficient to declare the OLE object type explicitly.
Use: Use the With…End Clause when working with Object such as Ranges, Worksheets, Workbooks, Collections etc.This will force you to explicitly declare the types of your variables.VBA is a dynamic typed language therefore you do not normally have to declare the type of your variable or declare variables in that matter.I used to use VB (Visual Basic 5 and 6) to create DLLs many years ago. After some research on this issue, I learned some new tricks about (1) how to correctly create a DLL for Access or Excel (or any Microsoft Office applications or VB6 applications), (2) how to correctly register a C# or VB. Net is not that hard as long as you have object oriented programming experience or knowledge.article to make sure you aren’t wasting your time writing VBA macros for something available as a feature in Excel.