
Here are a few basic tips for route builders which i hope will be useful.
When starting a new route, first lay down your track, build the railyards and railstations, then place the trackside objects (catenary, signalling) and after these steps are finished place the scenery objects (trees, buildings, textures). The reasons are:
1. Your FPS rate will remain high while you place the track and the trackside objects and its quite important to have high fps rate when working with tracks;
2. Its much easier to move a tree or a building than to move, rethink or rebuild a yard or railway station;
3. You don't want to mess the splines from the catenary with other splines like grass;
4. The infrastructure can be seen better withouth interferences from vegetation or other objects;