What is the impact of GuiXT on the R/3 performance?

GuiXT runs on the the client (frontend) pc. There is no performance impact on the application server or on the database. We measured around 5-10 milliseconds for a typical screen and with a script of medium length, on a 266 MHz Pentium PC. The user will probably not realize any performance impact. If you store the scripts on a central server in your LAN, or on a webserver, this causes increased net traffic. It might make sense to use the built-in local cache of GuiXT if several hundred or more GuiXT users are expected.