Long simulation time for CFD transient analysis

Hi there,
I have run a transient simulation for a simple tee tubing with inserted rod. But the simulation took a long runtime to go through a small transient time step. I would like to see vortex streets induced by the rod, but it may need a long transient time to see this phenomenon. How could I do in setting the simulation control? Or is there anything I have to do to boost the simulation? Thanks in advance! My work can be linked here:
https://www.simscale.com/workbench/?pid=7179550135114471697&mi=spec%3Ac2dc95d2-9349-4ef0-a008-a53da97247b2%2Cservice%3ASIMULATION%2Cstrategy%3A5&ps=analysis%2FsimulationControl

Hello hangchang0001

when having a look at your simulation you have the adjustable time setting on true.

Please have a look at this article about how to set up time steps for a transient simulation, and the adjustable time step.

Best regards
Sebastian