Playing the Harlem line most timetables i cannot complete due to trains randomly stopping on the line and trains back up behind the glitched train blocking me thus unable to complete the timetable, some trains are stopped at reds and the signals wont change as well and when i play same thing happens then tells me after contacting the signaler that my train appears to be "off path" some journeys i can't finish as well for the same issue can this be fixed please