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Ultimate Fixes Tools

Server-side fire fix, lag analyzer & debug toolkit for NeoForge 1.21.1. Detects & restores fire cancelled by mods/plugins, monitors MSPT/TPS in real time, and logs root causes with filtered stacktraces. Arclight compatible.

File Details

UltimateFixesTools-1.21.1-1.1.1-NeoForge

  • R
  • Apr 20, 2026
  • 895.10 KB
  • 68
  • 1.21.1+1
  • NeoForge

File Name

UltimateFixesTools-1.21.1-1.1.1-NeoForge.jar

Supported Versions

  • 1.21.1
  • 1.21

Curse Maven Snippet

NeoForge

implementation "curse.maven:ultimate-fixes-tools-1518389:7953656"
Curse Maven does not yet support mods that have disabled 3rd party sharing

Learn more about Curse Maven

Ultimate FixesTools 

CHANGELOG 
[1.1.1] (19/0472026 23:06)


New Commands

/nflagchunk [top] (Requires OP)
Scans all worlds and lists the most problematic chunks with detailed info:

  • Exact chunk coordinates
  • Region file (r.X.Z.mca)
  • Dimension
  • Players present
  • Entities with type and count (e.g. zombie x48)
  • TileEntities
  • Estimated TPS impact of the chunk

You can use /nflagchunk 10 to show the top 10 worst chunks.
Results are saved in quetolagea.log.


/nfkill entities (Requires OP)
Removes all non-player entities within the given radius (max 256 blocks).

Logs include:

  • What was removed
  • Amount
  • Entity types
  • Exact coordinates

/nfkill tileentities (Requires OP)
Removes TileEntities (chests, furnaces, spawners, mod machines, etc.) within the radius and replaces the blocks with air.

Useful for removing corrupted or crash-causing blocks.


New Log File

bloques-crasheantes.log

Logs everything removed using /nfkill, including:

  • Action performed
  • Source
  • Radius
  • Dimension
  • MSPT at the time
  • Type of each removed entity/block
  • Exact coordinates

Logger Blacklist

You can now silence log spam from other mods via config:

loggerBlacklist=actuallyadditionsaddon,otromod
  • Listed loggers are reduced to ERROR level
  • INFO and WARN messages are hidden from console and latest.log
  • Only real crashes and critical errors are shown

Improvements & Changes

+ /nfresources improvements

  • Now shows real system RAM (e.g. 32GB, 128GB) instead of just JVM heap
  • Displays two values:
    • Total system RAM
    • Java allocated RAM (Xmx)
  • Values above 1024 MB are now shown in GB (e.g. 31.8GB instead of 32768MB)

~ Adjustments

  • Default lag threshold increased from 50 MSPT → 100 MSPT
    (Previous value caused alerts under normal server conditions)

Fixes

  • Fixed non-final variable error inside lambdas in /nfresources