I played the new Rapid Transit and on the S6 to Geitheim the train derailed, on the S6 to Leipzig Messe the AI train stopped 100 meters too early and I can't accelerate the Talent 2 (tried on S1 southbound and the S6 northbound)
I have the same issue with the train derailing when starting a service run in timetable mode... It's pretty annoying that they released an update that literally breaks the game.