No, there is no
delay if you configure GuiXT correctly.
probably store the GuiXT scripts at a central place, e.g. a central file server
or the SAP database (Web Repository or Mime Repository). In this case it is
important that you activate the GuiXT script cache and use the "VersionNumer"
command to control the cache update. There will be no additional network traffic
after the initial loading of the scripts into the local cache, which is done
automatically when a script is needed.