I don't understand : I didn't put the /trackfps parameter in my BZ2 shortcut, but these infos are always displayed at the top of the screen...
Is this because of the BETA nature of the v1.3beta release ?
yes, its because its a beta. I belive you can turn it off with ctrl+enter
Take a look at your gameprefs.ini file, located in your addon\config path. You'll see that there is an option to turn off fps tracking, if you like. There may be some other options with current default settings in there that you'd like to change as well.