There's an issue with the timetable not matching on some services, making it impossible to be on time. 1F44 St Pancras International - Faversham.
This is probably cuz the timetable is computer generated, not manually entered. The ai trains have simplified physics/operations which means they just shoot off like rockets. They go straight to full power and tend to speed up quite quickly and brake quickly I guess. Which is why you can't be on time. They also never use safety systems and have zero wheelslip