SN2ManufacturingTweaks

Craft faster and build cheaper in Subnautica 2. A UE4SS Lua mod with two simple sliders — crafting speed and resource cost — that cover the entire production pipeline: the Fabricator, processors, vehicles, placed devices, and base structure building (walls, rooms, corridors, moonpools, foundations). Configurable in-game via SN2ModSettings.

Every slider is "bigger number = easier" — set anything to 1× for vanilla.

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What it does

Slider	Range	Default	Effect
Faster Crafting	1–10×	2×	Reduces crafting/fabrication time and base-building time-per-cell. 10× ≈ near-instant.
Cheaper Recipes	1–10×	2×	Reduces the materials needed for everything — Fabricator items, devices, vehicles, processor outputs, and base structure (per-cell material cost).

Each has its own enable toggle. Recipe ingredients never drop below 1 (never completely free); base-structure costs scale down proportionally.

Covers the whole pipeline

Subnautica 2 actually uses two separate systems, and this mod handles both:

• Recipes (UWECraftingRecipe) — Fabricator, placed furniture/devices, Vehicle Bay, processors.
• Sculptural base building (UWESculpturalBaseModuleSettings) — the walls/rooms/corridors/moonpool you paint with the Habitat Builder, which have their own per-cell material + time cost.

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⚠️ Single-player / host only

Crafting is server-authoritative, so this works in single-player and for the host of a co-op session. Joining clients won't see the changes applied on their end.

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Requirements

1. UE4SS for Subnautica 2 — Nexus / GitHub
2. SN2ModSettings — Nexus — the in-game slider UI.

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Installation

1. Make sure UE4SS is installed (dwmapi.dll next to Subnautica2-Win64-Shipping.exe, ue4ss/ folder beside it).
2. Extract this archive so the SN2ManufacturingTweaks/ folder lands in:

   <game>\Subnautica2\Binaries\Win64\ue4ss\Mods\
   

3. Add this line to ue4ss\Mods\mods.txt:

   SN2ManufacturingTweaks : 1
   

   (loads it before SN2ModSettings so it shows in the settings UI; otherwise just restart once).
4. Launch → Settings → Mods → Manufacturing Tweaks.

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How it works (technical)

Aspect	Target	Method
Recipe craft time	UWECraftingRecipe.CraftingTime (float)	÷ multiplier
Recipe materials	UWECraftingRecipe.Requirements[].NumItems (int32)	÷ multiplier, floored at 1
Base build time	FUWEBrushTypeSettings.TimePerCell (float)	÷ multiplier
Base materials	FUWESculpturalBaseCellCost.Cost (float)	÷ multiplier

Recipes are found with FindAllOf("UWECraftingRecipe") (~243 assets). The base-building costs live in a TMap of nested structs on the class-default object UWESculpturalBaseModuleSettings, reached with StaticFindObject (since FindAllOf skips CDOs) and committed with a struct write-back. Vanilla values are snapshotted once so changing a slider always recomputes from the true baseline and never compounds; a 1 Hz loop catches late-loaded data and reacts to slider changes. Toggling off restores vanilla.

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Credits

• UE4SS — ported for Subnautica 2 by the Subnautica2Modding group.
• SN2ModSettings by Just-Chaldea — the in-game slider UI.
• ConfigManager pattern adapted from Capacity & QuickBar Tweaks by iTestor.

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License

MIT — see LICENSE.

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Changelog

1.0.1

• Added Nexus + GitHub metadata so SN2ModSettings shows "View on Nexus" / "View on GitHub" buttons. No gameplay changes.

1.0.0

• Initial release: Faster Crafting and Cheaper Recipes (1–10× each), covering the Fabricator, processors, vehicles, placed devices, and base-structure building (walls/rooms/corridors/moonpool/foundations). SN2ModSettings sliders with per-aspect toggles.