[0.13.8] Inserter speed difference depending on direction

[jonatkins]

Inserters transfer items from chests to belts at different speeds when facing different directions.

I filled four wooden chests with 800 iron ore each, then set up inserters to unload onto belts in each of the four directions. Finally I placed a substation to power all the inserters at exactly the same time. Indicator lights were connected to the chests to show when they were empty.

inserter-speed-bug.png (678.35 KiB) Viewed 905 times

In the screenshot, you can clearly see the difference between top and bottom building up on the upper belt.

With both stack inserters and fast inserters, unloading to the left/right was always faster than unloading to the top/bottom. Also, stack inserters unloading to the bottom were faster than to the top, but (oddly) this difference was far smaller when using fast inserters.

Other inserter types have not been tested, but I imagine it would be similar,

First noticed in 0.13.6 (I never looked closely before), and only had a chance to compare timings after 0.13.8 was released.

[jonatkins]

As a comparison, I tried fast inserters on 0.12.35

Fast inserters both down and to the right were the same speed, but unloading up was slower by several percent - so it's not completely a new issue in 0.13.x

[Rseding91]

viewtopic.php?f=48&t=9141 yes it's not a new issue. Just not one we care to put any time towards right now.