High —The solver tries to find a solution that minimizes time window violations at the expense of increasing the overall travel time. Choose High if arriving on time at orders is more important to you than minimizing your overall solution cost. This may be the case if you are meeting customers at your orders and you don't want to inconvenience them with tardy arrivals (another option is to use hard time windows that can't be violated at all).Given other constraints of a vehicle routing problem, it may be impossible to visit all the orders within their time windows. In this case, even a High setting might produce violations.