A guess:
Either you're copying some formulae which are complex or refer to entire rows/columns
and/or the cells you're changing are the precedents to many and/or complex formulae (possibly also involving entire columns).
So the time taken may be the recalculation time. Do you see evidence of calculation taking place on the status bar at the bottom of the sheet? Changing calculation to
manual may not speed things up but it's worth a try to see if it makes a difference.
ps. your code could probably be shortened to:
Code:
If ind > 5 Then 'Pour éviter de copier l'entête du tableau
Range("A" & ind - 1 & ":M" & ind - 1).Copy Range("A" & ind)
End If
or
Code:
If ind > 5 Then 'Pour éviter de copier l'entête du tableau
Cells(ind - 1, "A").Resize(, 13).Copy Cells(ind, "A")
End If