由于某种原因，Vbscript变得非常慢

Question

所以我试图使用自动互联网资源管理器从adwords获取一些数据，该脚本运行正常，但过了一段时间它会慢下来爬行。你能看出为什么会发生这种情况或以任何方式规避它的原因吗？

'code to halt internet explorer
Sub WaitForLoad(obj)
    Do While ie.Busy: Loop
    Do While obj.readyState <> 4:  Loop
    wscript.sleep(100)
End Sub

'code to save the HTML
Sub SaveHTML(savePath, fileName)
    Dim objFileSystem, objOutputFile
    Dim strOutputFile

    ' generate a filename base on the script name
    strOutputFile = savePath & fileName & ".html"

    Set objFileSystem = CreateObject("Scripting.fileSystemObject")
    Set objOutputFile = objFileSystem.CreateTextFile(strOutputFile,2, TRUE)



    objOutputFile.WriteLine(ie.document.getElementById("btfResults").innerHTML)

    objOutputFile.Close

    Set objFileSystem = Nothing
End Sub


'create ie object
Set ie = WScript.CreateObject("InternetExplorer.Application")

'set the ie properties
ie.ToolBar = 0
ie.StatusBar = 1
ie.Width = 999
ie.Height = 999
ie.Left = 0
ie.Top = 0
ie.Visible = 1




  ie.Navigate "https://adwords.google.co.uk/um/Logout"
  WaitForLoad(ie)

dim objFSO,objFile,strContents,objReadFile,WriteStuff
Set objFSO = CreateObject("Scripting.FileSystemObject")
Set objFile = objFSO.GetFile("logon.log")

Set objReadFile = objFSO.OpenTextFile("logon.log", 1)
    strContents = objReadFile.ReadAll
    'Wscript.Echo strContents +1 
    objReadFile.Close



  ie.Document.getElementByID("Email").Value = "GMAILADDRESS"

  ie.Document.getElementByID("Passwd").Value = "PASSWORD"


  'Note: You could just get the form and submit it, but
  'you'll miss out on any special JavaScript associated 
  'with the Submit button.
  ie.Document.getElementByID("signIn").Click
WaitForLoad(ie)
  ie.Navigate "https://adwords.google.co.uk/o/Targeting/Explorer?"
WaitForLoad(ie)

 dim cn, rs,rows

set cn = CreateObject("ADODB.Connection")
set rs = CreateObject("ADODB.Recordset")
cn.connectionstring = "Driver={MySQL ODBC 5.1 Driver};Server=localhost;Database=test;Uid=root;"
cn.open
WaitForLoad(ie)
  ie.Document.getElementsByTagName("input")(3).click
dim j
j=strContents
dim document_start
document_start=ie.Document
Do While true
rs = cn.execute("SELECT * FROM `emails1` WHERE `send`>'"+CStr(j)+"' order by `send` asc limit 0,1")
j=rs(1)
ie.Document.getElementsByTagName("textarea")(0).value=CStr(rs(0))
ie.Document.getElementsByTagName("button")(0).click

WScript.Sleep 4000
dim value,value1,value2,str,str1,i,ssf,ssf1,rep,SECOND,dpth
SECOND=true
dpth=0



Do while (SECOND and dpth<3)
SECOND= false
i=0
'Set WriteStuff = objFSO.OpenTextFile("tst.log", 2, True)
for each value in ie.document.getElementsByTagName("tr")
if (i>14  and  i<>17 and i<>18 and i<>19 and i<60 ) then str=str+value.innertext+ "__________________"
i=i+1
next
str = replace(replace(replace(Trim(Replace(Replace(str, vbCrLf, "/"), vbTab, "")),"////// ",""),"/////","////"),"////Keyword///Competition////Global Monthly Searches ////Local Monthly Searches __________________","")
ssf=split(str,"__________________")
for each rep in ssf
if (StrComp(Cstr(rep),"")<>0) then
ssf1=split(rep,"////")
cn.execute("INSERT IGNORE INTO `test`.`emails1` (`word`,`competition`,`GlobalMonthly`,`LocalMonlthly`)VALUES ('"+Cstr(ssf1(0))+"','"+Cstr(ssf1(1))+"','"+Cstr(ssf1(2))+"','"+Cstr(ssf1(3))+"');")
on error resume next
'WriteStuff.WriteLine(Cstr(ssf1(2)) & vbCrLf)
end if
next

for each value in ie.document.all
if (StrComp(Cstr(value.className),"sJQB")=0) then 
value.click
dpth=dpth+1
WScript.Sleep 500
SECOND=true
Exit For
end if
next


'WriteStuff.Close
loop


Set WriteStuff = objFSO.OpenTextFile("logon.log", 2, True)
j=j+1
WriteStuff.WriteLine(j)

WriteStuff.Close
ie.document=document_start
loop


ie.quit

我用cmd的wscript运行它。