Need help understanding gradual infill step height

[BoujeeHats 0]

I understand the principal of gradual infill. I understand the number of steps is how many times the infill will be reduced/increased. I need help understanding what the step height setting is for? My cura runs super slow, so I cant play with the settings and look how it affects...

[GregValiant 1,492]

The step height is the duration (in mm) of the step in the infill counting down from the top layer of infill.

This model is 100mm tall with no top or bottom surface and infill density at 20% and the Step Height at 10mm.  I used Lines at 90° so the infill can be viewed.  Each of the 3 steps lasts for 10mm (the step height).

In this model (a calibration cube stretched in the Z) you can see that the first lines of increased density infill will print in the air.  That is one reason to increase the step height - so the first couple of layers that are "bridging" have a chance to complete and allow the next layers a base to rest on).

One thing I noticed is that the maximum number of steps appears to be 3 even though a warning doesn't come up until 6.