I always clear cache and start the program from scratch, then chose from the real drive from the quick drive scenario page. Quick Drives are not playable from the editor to my knowledge.
There is a main signal just north of Barnstorf that does not clear when the AI train ahead of the player train is led to the platform at the siding. I have to TAB to get through. (See a little earlier in the video). Since that signal does not clear and this happens just at the other end of Barnstorf, could it be related? A signal link gone wrong?
Further testing: i need to do a costum scenario for this so i don’t have to drive 60km for each test.