Is there a working AFB for the Talent 2 on the Schnellfahrstrecke? If so, could someone explain to me how to activate/configure since I can't figure it out by myself. Erklärung auch gerne auf Deutsch, ist manchmal einfacher ✌ (Explanation in German welcome, sometimes that's easier (for non native Englisch speakers))
It doesn't have AFB. Instead, there's a tempomat on the left side of the cab desk. Should be somewhere around the throttle. You use it the same way you would in a car. Set it once you've reached the speed you want to hold and activate it. It will then keep the train on that speed for you.
You can adjust the speed in increments of 5kph as well. It's a small lever just above of the throttle one.