Quake 4 used to track OK. Now the weapon keeps shifting all over the place, and I have to re-center all the time.
Also, after opening the vorpX settings with DEL and closing them, head tracking switches off completely, i.e. I can’t turn my head at all. The only solution is to reset the game profile.
Instead of disabling positional tracking you can also recenter the head tracking (from the vorpX menu or with ALT+SPACE). That will reset the camera position to where it is normally without losing positinal tracking.
Binding ALT+SPACE to one of the controller buttons should do the trick. I would’t really waste a controller button for that though. There is a ‘Center Tracking’ button on the main page of the vorpX ingame menu. Since normally you won’t really have to reset the tracking very often, that makes more sense than using a dedicated controller button.