vbs login script hangs in background processes

Greetings,

we are using a vbs script over VPN to map the network drives for users . the script works well for some users and for other users the script keep hanging in  processes background and utilizing the CPU to 100%  with high speed of fans . please let me know what kind of troubleshooting is required to resolve the issue . the script works fine for some users and some users not . we are trying to find a away to force the vbs script to end  after sometime  to resolve this issue .

we have created this script to map the shared folders for users over vpn , the script will run once the user connects to vpn

this is part of the script - from the end  -

' Get list of groups, UNC paths and drives' lettters (Note the comma between the UNC path and the letter)
'------------------------------------------------------------------------
objGroupsList.Add "AMPC_SupplyDepartment F", "\\cifs\Supply_Department,Z:"

objGroupsList.Add "AMPC_ARCHIVE_ALL", "\\CIFS\Archive AMPC,T:"
'-----------------------------------------------------------------------
Sub Output(strEntry)

if (verboseFileFlag = 1) then objFile.WriteLine(Now() & vbTab & strEntry)

if (verboseScreenFlag = 1) then  wscript.echo strEntry

End Sub
'----------------------------------------------------------------------
Set WshShell = CreateObject("Wscript.Shell")

Result = WshShell.Run("cmd /c echo N | gpupdate /force /wait:0",0,true)

Wscript.Quit(Result)