No, there are no aditional steps to use this commands. It is more noticiable when the scale is not extremely big. The scale, as you know changes the size of the volume, making it less accurate. I tested the resolution command with a volume scale of 5k (lower values make the changes more evident).
As you can see in the image (I hope its visible enough).
If you set the RSMResolution to 0 it will disable the effect. Maybe when the volume scale is too big you need to really crank up this values; making the rendering cost super big I’m afraid.