To limit the calculation time we change the maximum and initial delta t (time) to 1 hour using the SetModelProperty" function.
Set dtMax and dtInitial
# set model max and initial timestep size
timeStep = timedelta(hours=1)
SetModelProperty(fmModel, KnownProperties.DtMax, str(timeStep.total_seconds()))
SetModelProperty(fmModel, KnownProperties.DtInit, str(timeStep.total_seconds()))