IronFurnacesFix
Modby Gonduzhang
Fixes Iron Furnaces lag and memory issues caused by BiggerStacks (MC 1.20.1, Forge 47.4.x)
Type
Mod
CurseForge Downloads
322
CurseForge ID
1637411
Last Updated
Aug 19, 2026
Description
IronFurnacesFix
Fixes the lag and memory issues that appear when running BiggerStacks together with Iron Furnaces (更多熔炉).
What it fixes
- Memory / inventory blow-up: when BiggerStacks raises the stack limit (e.g. to 100k), Iron Furnaces was rebuilding its inventory with 100000+ slots on load, which blew up memory and made every save/sync slow. This fix restores the original slot count.
- Tick lag while smelting: the mult-smelting methods ran a per-item setRecipeUsed loop up to 100000 times every tick, which froze the game. The fix removes the loop (the result is identical) and derives the smelting cap from getMaxStackSize().
Your large stack sizes keep working — furnaces just stop lagging.
Compatibility
Component Version Minecraft 1.20.1 Forge 47.4.x Iron Furnaces 4.1.8 (required) BiggerStacks any (not required at build time)License
GNU GPL v3. Based on Iron Furnaces by mollgan.
Recommended Gear
AffiliateHardware and extras that pair well with this mod.
As an Amazon Associate I earn from qualifying purchases.
Similar Mods
Ghost Miners
A mod that adds an entity based off an old beta Minecraft myth. A black figure that roams the caves, watch out...
Grappling Hook: Neo
This mod add various grappling hooks for you to traverse your world in style.
Energized Power - Regions Unexplored
Compatibility between Energized Power and Regions Unexplored
[Deprecated] Left Behind
Adds SCP in Minecraft world
Stackable Potions
Makes all potions stack to 16 with a throwable cooldown for balance.
SimpleHome
SimpleHome adds three simple commands — /sethome, /home, and /back — to save your position and teleport back to it whene...