I’m in the 70s atm on a medium map. 14 towns as I remember, 12 connected with inner lines, some lines between them, 12 towns receiving goods. I have 50 something lines, that’s probably 200-220 vehicles. Game gets sluggish often for a few seconds but generally it works. I notice slideshow kind of lag if I try to build a long rail or road section in one go.
I think what may kill performance is the movement of the people, walking and driving around, when I zoom in there’s LOTS of them. That’s a lot of objects to do calculations for! Decisions at intersections (pedestrian crossings), chosing destinations etc. My guess would be, that optimizing this (simpler logic, dunno?) could help tremendously. We’ll see in a few weeks time if they succeed.
My pc is an i5-2400 with 8gb ram, Ati 6770 vga.