I'm having many derails on the saved game version. I seem to not get them on a map that I created. I know this is a WIP map and might be issues. All my railroads mods are the recent update. Is there an updated version of yours?
No I dont have any update for this save game.. I was able to take freight trains around the mainline at 50mph+ on the straights and a constant 25mph on the curves. Are you having issues with the curves or crossovers or what in particular?