A machine includes an engine and a governor operable to control an operating speed of the engine along a first droop curve such that the operating speed is a function of an operating load of the engine. The first droop curve includes a first region that defines a first slope, a second region that defines a second slope different from the first slope, and a transition point located at an intersection of the first region and the second region. The machine further includes a controller in communication with the governor. The controller is configured to determine an average operating load of the engine over a predetermined time period, adjust the location of the transition point based at least in part on the average operating load to create a second droop curve, and operate the engine based on the second droop curve.