@njion it does still happen too often sadly but oh well
here there was a problem where they often put SA134 timetables as basis for diesel lines, and as it stands, it also has better acceleration than 36WEh which is the mainstay of my route and so there was a time that whenever they put 36WEh on SA134-based timetable, it would accumulate like 6-10 minutes of delay for no discernible reason lol