Workbook Slow Down

Mar 30, 2009

I have a workbook made up of worksheets containing source data, pivot tables and charts but it is now becoming very slow since I have added a worksheet with many formulas.

If I move that worksheet containing many formulas (20 columns by 150 rows) to a different workbook will that help speed both of them up? The formulas will obviously still by referring to the original workbook.

Or is it simply by using formulas it slows things down whatever you do and I will have to think of a clever way of using pivot tables instead? Are there any other things that could be slowing it down? Other workbooks I maintain are fine.

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I have searched the forums re my issue and have not found a relevant solution. I have a large workbook 19MB in Excel 2007. There are 400 sheets and each sheet contains various formulas and one macro. The only graphics on each sheet are color coding of some cells. The workbook takes 2minutes 55 secs to load. Once open there are no issues. Is there a reason why this is so slow or do I just have to accept that being a large file it will take this long. There is no issue with HD space or RAM as the laptop is only used specifically for this workbook. Running Intel Core 2 Duo, 160 HDD, 2mb ram.

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Sample Formulas: ...

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my existing macro, as the run takes to much time to complete. (at least 20min) I've already tried several loops, but no one worked for me. Following situation: There are two excel files, entries in column 73 - 85 will be copied from WorkbookRust to the other workbook if the numer in column 5 is the same. Not every cell within this columns contains data, so the macro should automatically jump to the last entry in each of the above mentioned columns, instead of predefine the range as you see in the code below. After the data is copied to the other workbook, it will be filtered acc. to Sub FilterMain and then copied back to WorkbookRust. As already said, the whole thing works, just to lame.

Sub Allmacros()
Dim WorkbookRust As String
WorkbookRust = ActiveWorkbook.Name
ChDir "C:Documents and Settings vogtMy DocumentsRüstplausch"
Workbooks.Open Filename:= _
"C:Documents and Settings vogtMy DocumentsRüstplauschCH_Revenue_2008.xls"
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Windows(WorkbookRust).Activate
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Application.DisplayAlerts = False
Workbooks("CH_Revenue_2008.xls").Save
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End Sub

Sub UpdateEntries()......................

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Private Sub EuropeButton_Click()
HeaderRegion = "Europe"
ActiveSheet.AutoFilterMode = False
Range("A2:A8").Value = 0
Range("A2").Value = "TEG"
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I use
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It applies as well to cells that are not referenced in any other cell.
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Dim myRange As Range
Dim Write_Cell As Long

With Application

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It happily goes through a list and sums multiple records. It might not be the most efficient or best way to do it but it works and when I run it on a couple of stand alone sheets it takes a couple of seconds to process if that.

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Private Sub ComboBox3_Click()
On Error Resume Next
With Me.ComboBox3
If .ListIndex = -1 Then Exit Sub
Label23.Caption = Sheets("overview").Cells(.ListIndex + 2, "c").Value
Label24.Caption = Sheets("overview").Cells(.ListIndex + 2, "b").Value
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Sub QC()

Range("T1").Select
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Range("V4").Select
Columns("T:T").ColumnWidth = 15.29
Range("S1").Select
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Range("T1").Select
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