The same settings (a few have been renamed or removed because they were for old generation TrackIRs) are available in the Camera Tab in software version 5.x. The key setting for removing unwanted ambient light (when you seen more than three green dots in your Camera View window) is Light Filther Threshold. Turn it up to filter out more unwanted light--just not too high, or you can filter out light from the TrackClip too. If using the standard TrackClip, you can increase the IR Brightness setting while also increasing the Light Filter Threshold to optimize the camera against unwanted ambient light.
If you have a TrackIR 5, it should be pretty difficult to move outside of its field of view, which is pretty large. If this is happening, make sure the camera is mounted and aimed so that it is centered on your TrackClip or TrackClip PRO. To confirm this, go into the Camera View (right click on right side display window, select Camera View) and make sure that that three green dots are centered in the view. If not, adjust your camera position and angle until they are.