We compare maximum population size of 5, 10, 20, 40, 80, and 160 in figure and find that when all other settings are held constant a maximum population size of 20 produces, on average, more ULES per iteration than other values. Modifying this setting is more impactful than the minimum population on ULES per iteration. A maximum population of 5, indicating that only the 5 lowest energy structures can be chosen for use in employed on onlooker operators, has a significantly lower ULES per iteration rate, indicating that structural diversity provided to employed and onlooker operators is insufficient to be optimal.