The benefit of DSC depends on the car. On a cooking 981 it will not make much difference. On a 981 GT4 it adds greater compliance and for track use it provides an additional layer of adjustment. I suspect the compliance improvement is less on the 718 GT4.
Stock PASM dampers have a 100ms response time and don’t respond mid-stroke whereas the DSC has a 10ms response time. To get most out of the system you need faster active dampers.
The difference over stock and between different maps is noticeable on track. Writing maps is relatively simple but deciding what changes to make requires significant analysis and experimentation. I must have written over 100 maps and tried out 30; there is a limit to time and reflection on track days unlike Porsche with their zillions of engineering man hours.
If you’re going to fit one, I suggest you fit a permanent USB cable to the box so that your pre-written maps can be easily changed in a couple of minutes.
I don’t know if they have implemented more user friendly tools by now but I found tracking various maps and their installed versions required me to be very disciplined.
I found it a great product to make to most of my very modified suspension, allowing the running of high spring rates for track use without destroying road comfort (I did have a wife-suitable map). On track being able to use more sensor data than PASM and set damper stiffness behaviour for each of the (car’s) corners depending on G, speed, acceleration and deceleration made for better on-track handling.
In normal road use a number of the functions are not triggered unless over a customisable G threshold.
Did I ever get to a magic map, I would not say so. My experiences are covered over on the Modified Register forum.