Thanks for playing frien!
It's a shame but I think you maybe misclicked and advanced the tutorial when it was explaining clocks. When they are flashing (ticking) and you click them they delay the trains, otherwise they will start it immediately. I think I might just have two different buttons for it because it's not the first time people got confused. I guess less options != clearer choices. I'll see if I can implement a "back" button to the tutorial or have a quick help button always handy.
Also yeah the game does require quite a bit of concentration, it used to be even faster (lol). I can never tell if the game is too hard or too easy by myself since I have to play it so much and "know" the solutions to the levels because I make them. A second "slowing everything down" pass is in the works already. I do know very well how it feels to be running on low sleep, so no worries.