Hole Table Update Very Slow...

I have a macro that adds three rows of calculated data to a hole table.  I'm using an Excel worksheet function for some of the calculations.  When I add the data to the hole table with a loop, it is a long process.

I have other macros that add data to BOM tables that are very fast.  Where is my issue??  Thank you for your help.

UPDATE: Adding the command "swHoleTable.EnableUpdate = False" doesn't help.

Dim swHoleTable As SldWorks.HoleTable

    Dim swTableAnn As SldWorks.TableAnnotation

    Dim swHoleTableAnn As SldWorks.HoleTableAnnotation

    Dim swAnn As SldWorks.Annotation

    boolstatus = swModel.Extension.SelectByID2("Hole Table1", "HOLETABLE", 0, 0, 0, False, 0, Nothing, 0)

    Set swHoleTable = swSelMgr.GetSelectedObject6(1, -1)

    Set swHoleTableAnn = swHoleTable.GetTableAnnotations(0)

    Set swTableAnn = swHoleTableAnn

    If swTableAnn.ColumnCount < 7 Then

      Call swTableAnn.SetColumnTitle(4, "DD")

      Call swTableAnn.InsertColumn2(swTableItemInsertPosition_Last, 0, "DMS", swInsertColumn_DefaultWidth)

      Call swTableAnn.InsertColumn2(swTableItemInsertPosition_Last, 0, "BC", swInsertColumn_DefaultWidth)

    End If

     ' Calculations happen here...

     ' Slow text insertion loop

    For I = 0 To UBound(dblTableData)

      swTableAnn.Text(I + 1, 4) = CStr(dblTableData(I, 2))

      swTableAnn.Text(I + 1, 5) = CStr(dblTableData(I, 3))

      swTableAnn.Text(I + 1, 6) = CStr(dblTableData(I, 4))

    Next I

SolidworksApi macros