Some users reported difficulty in activating actions associated with 4 and 5 finger squeeze and splay gestures. The gesture log would show that the gesture had been recognised but that the gesture hadn’t proceeded far enough along to be considered a full squeeze or splay hence the action was not invoked. To overcome this issue we have introduced in version 2.0.46 a sensitivity control that can be used to fine tune the decision process!
Squeeze and splay sensitivity determines how much your fingers must contract or expand during a squeeze/splay gesture to have it be detected as either a squeeze gesture or a splay gesture respectively. This comes into play after Gestures has detected that the current gesture is going to be a squeeze or splay gesture (as opposed to a different gesture like a four finger drag), but before there's been adequate movement to determine which of a squeeze or a splay it is. Due to it involving several fingers moving in different directions, squeeze/splay gestures are a little bit more difficult to detect than the other gestures, hence requiring more movement.