A work machine and a method of controlling work machine power of the work machine during a harvesting operation for harvesting a crop. The work machine may include an engine, a hybrid machine, or an electric machine. The work machine may operate by identifying a state of a driver assistance selector that includes a manual mode and an automatic mode. While in the manual mode, the work machine may operate at a nominal power target, and, when in the automatic mode, the work machine may operate at an enhanced power target for harvesting. When the driver assistance feature changes from the automatic mode to the manual mode, the transition between the enhanced power to the nominal power may be reduced over a predetermined period of time to optimize machine drivability and system performance.