Excel slow to load

Hello,

I have developed an application using a MDI form and when the form loads, I load an instance of Excel using the class module below. During the life of the application I load some data to the file File1 and then I print it. The first time that use the application, Excel did load very fast but now it takes almost 40 second to load and 20 second to print my File1. I'm new to automation and vb and I don't know what else to do to improve the speed of excel.
Any suggestions?
Thank you.
Chris.

Class module

VB Code:

Private m_oExcel As Excel.Application
Private m_oWorkbook As Excel.Workbook
Private m_oWorksheet As Excel.Worksheet
Private m_bReadyToPrint As Boolean
 
Private Sub Class_Initialize()
 Set m_oExcel = New Excel.Application
 m_strPath = App.Path & "\File1.xls"
 Set m_oWorkbook = m_oExcel.Workbooks.Add(Template:=m_strPath)
 Set m_oWorksheet = m_oWorkbook.Sheets(1)
 m_bReadyToPrint = False
End Sub
 
Private Sub Class_Terminate()
 m_oExcel.ActiveWorkbook.Close False
 m_oExcel.Quit
 Set m_oExcel = Nothing
 Set m_oWorkbook = Nothing
 Set m_oWorksheet = Nothing
End Sub
 
Public Sub CreateReport(mstrArg As String)
On Error GoTo Err
 m_oExcel.Run m_oWorksheet.CodeName & ".DefineVars", mstrArg
 m_oExcel.Run (m_oWorksheet.CodeName & "." & "runExcelReport")
 m_bReadyToPrint = True
 Exit Sub
 
Err:
 m_bReadyToPrint = False
End Sub
 
Public Sub PrintReport(frm As Form, objCmmDgl As CommonDialog)
 If m_bReadyToPrint Then
  With objCmmDgl
   .PrinterDefault = True
   .ShowPrinter
  End With
  m_oWorksheet.PrintOut 1, 1, 1, False
 
 Else
  MessageBox frm.hWnd, "Report was not create correctly. Cannot print report!" & vbCrLf & Err.Description, "Report information", vbOKOnly
 End If
  
End Sub

I had this kind of problem last week.
I used the magic trick to solve my problem.

Before using the magic trick write at the beginning of the procedure that load data

VB Code:

Application.ScreenUpdating = False

and at the end

VB Code:

Application.ScreenUpdating = True

Want to know what is the magic trick?



1- Save all your stuff.
2- Click START on bottom left.
3- Select SHUT DOWN.
4- Select RESTART.

That' it... :eek2: :eek2:

Do know why but my app work fine the first time I used procedure using a loop and the next time I tried it, it took forever to accomplish. I restarted my computer and it worked fine.

Setting applica