I’m a little late here, but go to your simulation designer and go to simulation control. Change the runtime from 1500s to 6000s. Apparently you can try 4000s. Then, change the number of timesteps to equal the runtime. You need to click the “expand details” button to see the timesteps box. Then, run the simulation again. If 6000s, it will take approximately 12 hours. I know you may not have that time, but just know that that’s the solution to the problem.