@lucaud There are a few things you can change...
For instance the motor inductance are properties that are set in the motor and you can specify them by selecting the motor and changing the properties (on the right hand side). (See attached image)
Also, you can change how the motor is excited. For example: in your model, if you change the sinewave frequence to 60Hz then you can get a very different result and even if you change in the input voltage to say 10 V. (see attached model)
Lastly, I noticed that the model had the compiler option disabled. If you have your compiler setup, this model will simulate much faster with this option on.