After a few decades of building my RR company(s), my computer starts running real slow. Why is that?
You are running too many trains for your computer to handle. If you like the idea of the AI running and scheduling your trains for you (most experts do), then you need to make your companies smaller. Make each company connect to only about 6 to 10 cities each. That way they will not over saturate a few central cities with too many trains. Many times this is necessary for a good record score. If you leave a company, the AI will buy more trains as long as it sees there is more cargo that needs hauling. Especially if you haven’t been moving enough of the cargo previously. All those trains and wheels clattering down the track require a LOT of processing. You can alleviate some of the problem by doing all your work while under pause and then unpause to let the game run again when you’re done. Ultimately, the proper fix is getting a faster computer. 10.