Crowd Simulation caching

[Diurno]

Hi all, i'm working in a scene with 3 crowd simulation. To get rid of simulation time every time i scrub the timeline i tried to cache the crowds, by the CrowdFX editor and caching all the frames i needed. The file are created correctly, but when i check the Use Cache checkbox, if i try to go forward on the timeline the "Simulation time" it's still there.... It's normal or i've done something wrongly?