There has been a lot of research done on intersection design ( https://forums.factorio.com/viewtopic.php?t=100614 . I use roundabouts like you have, but they are not the greatest for throughput. The bigger issue is congestion. It looks like every train in your network is trying to go to one little ...

In my latest game I have been experimenting with having a tile style base(this is my first time doing this). The idea was to have a train or muliple for each resource and in the endgame to just copy tiles to increase production. Things have been going mostly well but recently I have observed that ...