In most cases, the default setting is sufficient, but if you see a warning message in RealFlow's “Messages” window you should consider a higher value. Please be careful! Let's assume you have the following settings: Specify the maximum number of simulation steps for Hybrido core fluids:
Specify the minimum number of simulation steps for Hybrido core fluids: “Time scale” works as a factor: 2.0 means that the fluid will be two times faster. Values smaller than 1.0 will decelerate the fluid settings greater than 1.0 have an acceleration effect.