MT5 is still testing thousands of variants, just in a smarter order
Genetic optimization does not magically reduce the workload to “a few runs”. It simply prioritizes promising areas of the search space and drops obviously bad regions faster. You still run ~tens of thousands passes for any serious EA, especially when you add realistic data ranges and multiple symbols.
In practice, traders often underestimate this: they see “genetic” and expect something almost instant. MT5 still has to simulate every trade for every pass.