help about difficulty rocksmith 2014 remasterd PC

[faber]

Hi everyone I have recently been a user of Rocksmith 2014 Remastered.

I noticed that in the section it is possible to change the difficulty understood as speed, on the Ubisoft site they say that it is like this:

Rocksmith® Dynamic Difficulty can be changed. Do you need to practice more before you feel like your fingers are in the right place? Make the controls easier and the game will give you the time you need. On the other hand, if you feel ready to take a step forward, just pick up the pace. I have recently been a user of Rocksmith 2014 Remastered Edition.

 

For me the speed does not change at all but it remains the same whether I go to increase or decrease it.

am I wrong something?

Thanks to those who will be able to answer me