We activated the availability control check for budgets in Project systems last month. During the month end closing while running the program CJ45 it took the job a lot more time than it generally takes. Rather it got stuck after completing 40% and had to be cancelled manually. However, it ran smoothly during test runs. Does activation of availability control check brings the performance of closing programs like CJ45 down as the program has to now do an extra step before committing the cost to the cost object.