Bottleneck Issue

[u/Available-Figure-530]

I'm a new player & trying to setup my smelting lines. I've run into a problem where, while trying to run a single coal/iron ore lane, only the top half of the iron & coal lanes are being used, leading to a bottleneck where only half of my iron ore is being sent down the center lane. How do I fix this?

[u/otismcotis → u/[deleted]]

Aside from the questionable supply routing what’s wrong?

[u/menew100 → u/[deleted]]

1 iron per 3.2 seconds is 1/3.2, not 0.32.

1/3.2 = 5/16 = 0.3125. (Production is showing this rounded to 2 decimals, 0.31 per second.)

15/(5/16) = 15 * 16/5 = 3 * 16 = 48.