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XFermium

Lightweight optimization project that aims to optimize, fix/reduce lag and improve overal performance (FPS/TPS)
by CoffeeG
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2,431 downloads
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Updated Jul 6, 2026
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Bug Fixes Performance Processing Server Utility Utility & QoL

Require FokusAPI to work correctly, please install it

Lightweight optimization project that aims to optimize, fix/reduce lag and improve overal performance (FPS/TPS)

Features

  • Tweak multiple entities collision, collide rule
  • Optimize player movements for server/client smoothness
  • Faster Minecraft RB by making it running if it necessary, not too frequently
  • Tweak some entities mechanic and optimize Experience Orbs entity for mobs farm, etc…
  • Optimize minecraft's random tick speed & mods scheduling, reduce the latency - improve TPS
  • Optimize & tweak item entities, espicially for some type of items with large quantity such as cobblestone,netherrack,etc… , greatly improve performance
    • (This feature has been splitted into a standalone mod - Recommend to install with XFermium: Enhanced Item Entities

Comparison

Before

image

After

image

Incompatibility

None

Try my other mods

  • Brutal Nightmare - Minecraft, but with insane difficulty. Zombie place/break blocks, throw TNT. Skeleton, Creeper, Ghasts, Spider,Phantom,… get new abilities.New mini bosses…
  • Double Jump - Add Double Jump and Leap mechanic to minecraft with sneak button!
  • Adrenaline Rush - Add "final shout" & "second chance" mechanic into minecraft! You'll have 0,5 HP instead of dying when fall from height ; Buff your power when you at low HP
  • Wall Climbing - Add Wall Climb (Wall Jump) mechanic to minecraft
  • Useful Snowball - Useful Snowball! Make snowball slow mob.
  • AwfulLightning - Makes Lightning strucks on players more oftenly, can create fun & surprising deaths with lightning bolts!
XFermium-v1.0_MOD.jar
MC 1.16.3, 1.16-Snapshot, 1.17.1, 1.21.2-Snapshot, 1.21, 1.21.6-snapshot, 1.16.1, 1.18.1, 1.20.2-Snapshot, 1.20.5-Snapshot, 1.16, 1.19-Snapshot, 1.21.1-Snapshot, 1.16.5, 1.19.3, 1.20.2
Release 2026-06-06 Get

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