To simulate a project step by step without interaction, choose Trace. Trace steps through the project, highlights the current component, and updates connection record counts.
If the simulation has not been started, Trace starts it automatically, and continues until all data has been processed. Click Stop in the Trace working message to interrupt the simulation.
Tracing does not perform post-processing like executing
Post SQL on DB Components, etc.
You can control the simulation rate by setting Simulation trace delay option. The Simulation trace delay option accepts values between 10 and 9999 milliseconds, the default is 250 milliseconds.
To set the trace delay
Click File | Preferences | Engine.
Change the Simulation trace delay.