Ok, so this might get a bit long-winded. Sorry in advance. I'm trying to set up a super tight, tokaido shinkansen-like train line. This means managing departures down to the tick in order to squeeze as many different services onto the tracks as possible. I set out to do this by first constructing a test train, and have it timetable the entire track. I then added some extra wait time at stations as a buffer, made forty-four copies of it, retired the original, and started launching the trains from a single depot. I did this in order to try and make sure that the time between each train was exactly the same. Once they had all entered service, I made another forty-four copies with the same shared timetable, and started sending them out from a neighboring depot, with their own platform. I offset their launch time slightly by waiting to activate the trains in the depot at just the right moment, so that they run as close to the previous departure as possible, without ever encountering any slowdown.
This works fine for the first 10-20 trains. However, once I got into the low thirties, it became very apparent that the gap between the two supposedly identical groups was growing. It is not due to their departure times being too close. Believe me, I've spent way too long taring at the trains leaving the station, trying to figure out what's wrong. This has completely killed my will to play. I've spent hours and hours trying to come up with some explanation, to no avail.
Have I stumbled upon a bug in the way OpenTTD keeps track of the trains? Or is there some natural explanation.
Here are the timetables(https://imgur.com/7m7awbr
), a short video of the first pair of trains leaving the station(https://youtu.be/TWYxSxjuMs8
), the last pair of trains(https://youtu.be/aEmlLA9kh5s
), the launch of the first set of trains(https://youtu.be/PcAGjkTzEZo
), and the second set of trains(https://youtu.be/ZIj5V7V2doc
Help me TT-Forums, you are my only hope!!
I'm using version 1.8.0. You will find the savegame where I am about to launch the second set attached.