I wouldn't recommend using SimulateRealClick just because it changes the time required to perform a step. Using the SimluateRealClick property can compromise the reliability of your tests if not used properly.
There are no other properties that will affect the execution time for your test. There's the timeout property but it won't make your test run faster (although it can cause failing steps to fail faster). The best way t speed up a test might be simply to avoid fixed delays (i.e. Execution Delay) because they definitely waste time unnecessarily. The should only be used as a last resort.
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