I've been trouble-shooting a fluid simulation and something that kept sticking in my throat was that my Fluid World scene size was set to 0.5 meters when my domain was actually much larger than that. It's my understanding that that domain size controls the displacements and iterations but the control was deactivated so I couldn't increase the setting.
I figured out that if I set the Scene units to NONE that I could go back and change the setting. A test bake with units on NONE and the domain size set to 7.5 appeared similar to the one with the units set to Meters reporting a domain size of 0.5. Do I need to manually set that value in order to get an accurate fluid simulation or is the size calculated automatically with the units set?