Regarding the crashes. You seem to be doing hell of a lot of building all at once. I think if you save more often, this will prevent crashing. When building routes in Microsoft Train Simulator, you can get many crashes by building too much in one session without saving. The best way is to save little and often. That way you won’t loose any work you have done over say half an hour.
Regarding the rail connections in the video, I think they could be tidied up a bit, it is beginning to look like a knitting plan gone wrong (just meant to be pun, not critical lol)
Interesting to watch though. Regarding all the windows, you keep opening in the interface, there seems to be no end of them. It’s going to take some while to find out what does what?
Will there be any tutorials in the release version, to explain how everything works?