How it works

The basic difference with the basic 3D Vizualizer is that this advanced version allows a variable tempo. The variable tempo speeds up and down the carousel, within parameters that you define, namely:
a) the minimum speed
b) the maximum speed
c) the difficulty level, which is basically what percentage of time the carousel spends near your minimum or maximum speed. The further you push the difficulty slider, the faster it tends to go. I would suggest you do not touch the difficulty slider; leaving it in the middle as default works fine
d) the duration of the practice track

From experience, the variable tempo is a much more powerful method of spinning the carousel, and results in much faster progress.

You can toggle between fixed and variable tempo. When in fixed, you can also change the carousel's rotation so that it moves either smooth or discretely, from one cell to the next.