Inconsistent stamper behavior leads to wasted inputs. The stamper will keep r...

Status:	Duplicate
Added by:	a...s@betahub.io on April 25, '26
Reported for:	0.8.5 Auto

Steps to Reproduce

No steps to reproduce

Explanation

Inconsistent stamper behavior leads to wasted inputs. The stamper will keep running even if one of the two output lanes is blocked. This makes it extremely difficult to truly build a balanced system around a stamper if the stamper is not running at full speed. For example, if you chain two stampers together and use the shared scraps to do something, the game engine will end up running the upstream stamper more often - even if natural balancing would avoid this. This can be incredibly annoying as overdrawing your inputs means you need more resources to generate the same amount of output. There is no way I can see to avoid this other than avoiding stampers entirely, or making sure none of my buildings (even purposefully) run at partial time. I saw in a thread somewhere that this very strange behavior was to make the game easier to play, but that doesn't make sense. If you don't want the output you can just hook up a scrapper, but if I want it to block (as it naturally would), I don't have an "anti-scrapper".

Please, please consider revisiting this design choice, or at least give players that care about building balanced factories the option to do so.

For reference, I attached an image with two screenshots.

• At the top is the ideal behavior (simulated by forcing independent consumption of the scrap output of each stamper). You can see that they are balanced (same shade) and the inbound cubes is 74.
• At the bottom is the default behavior without awkward workarounds, where it prioritizes running the first stamper at full speed because it just "magically discards" the primary output of the first stamper when the second stamper is blocked. This shows as unbalanced in the shading of the stampers, and the inbound cubes is now as high as 87.

Since I'm using 8x8 cubes, that's 10*8=80 regular cubes per minute that I'm losing, over 1 entire furnace's worth! The awkwardness of working around this bizarre behavior does not seem worth the small benefit of avoiding beginner players needing to add a scrapper to unblock their stampers :(.

Device Info
Device: System Product Name (System manufacturer)
CPU: AMD Ryzen 9 3900X 12-Core Processor
RAM: 65450 MB
GPU: NVIDIA GeForce RTX 3080

Attached Files
Screenshot/Video: https://drive.google.com/open?id=1eSiRx1XgLMK7ifX2xgT1Z3OHlC0JA-HI
Log File: https://drive.google.com/open?id=1EZ4v0hnO3ZRb3WJdV78desPIwVzzcFVZ
Save File: https://drive.google.com/open?id=1kMUXs10Lkh9R477hkXkEktC6oFwtTpcA

Report Info
Version: 1.0.3-pre.21+de56c06d.4271
Player-rated impact score: 8/10
Steam Username: m-dep
Steam ID: 76561198059798438
Game-breaking/crash: No
Reporter Email: m.d.depalma@gmail.com
Cloud Service ID: AAE1BDCA30879C92
GameAnalytics ID: 1c2c0c12-453a-4d27-ac97-f1bcb05b806e
Submitted via Google Form: 25/04/2026 05:19:27

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