If VBA code declares FileCount as a constant rather than a variable, the code tends to run faster. Why is this?

The scope of constants is limited to the procedure that declares them

Constants are declared at compile time, but variables are declared at run time

Once declared in a project, the value of a constant cannot be changed. There is no need to look up the current value of FileCount when it is a constant.

The Const declaraton specifies the most efficient type given the constant's value