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LC²H [Lost Cities: Multithreaded]

LC²H V3 turbocharges The Lost Cities to massive cities, lightning-fast, silky smooth gameplay. Fully C²ME compatible. I’m proud of this, and hope everyone will enjoy using it :]

File Details
DownloadInstall

lc2h-3.1.0.jar

ByAdmany
  • R
  • Jan 17, 2026
  • 885.34 KB
  • 4.4K
  • 1.20.1
  • Forge

File Name

lc2h-3.1.0.jar

Supported Versions

  • 1.20.1

Curse Maven Snippet

Forge

implementation fg.deobf("curse.maven:lc2h-1325431:7473415")
Curse Maven does not yet support mods that have disabled 3rd party sharing

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LC²H V3.1.0 | Translation Update + Performance Pass

V3.1.0 Highlights

V3.1.0 is a major refinement release: full translation support, a fully cleaned-up codebase, big cache + throughput upgrades, improved GPU utilization, and a wide sweep of fixes + compatibility improvements for smoother gameplay across more setups.


New: Translation Support

  • Added proper localization support across the mod
  • Community translations are now managed on Crowdin: https://crowdin.com/project/lc2h
  • Language coverage will expand over time as translations are reviewed and promoted

Fully supported languages (current): English, Lithuanian, German, Simplified Chinese


Performance & Throughput

  • Improved API throughput and reduced runtime overhead in hot paths
  • Better overall scheduling and less redundant work during heavy gameplay / worldgen scenarios
  • GPU is now utilized more for relevant tasks where possible, improving overall workload balance
  • Reduced memory footprints across the board for better stability in large worlds and modpacks

Cache Overhaul (The Lost Cities + LC²H)

  • Greatly optimized The Lost Cities cache and LC²H cache behavior
  • Faster lookups, less rebuild churn, and improved scaling under load
  • Reduced cache-related memory waste and improved hit-rate behavior in real gameplay
  • Combined cache footprint is now 512MB by default (The Lost Cities + LC²H)
  • The cache size is configurable and can be changed to fit your system and modpack needs
  • Added new UI config toggles + options specifically for caching behavior and cache limits

UI / Config Improvements

  • Manual saving: UI changes now require explicit save/apply instead of silently auto-applying
  • Leave warning: if you try to exit with unsaved changes, you’ll be warned first
  • Added new popup warning boxes for critical / potentially destructive options
  • General UI stability improvements and consistency fixes
  • Improved clarity for performance-related and cache-related settings

Compatibility Updates

  • Improved compatibility with Distant Horizons (reduced conflicts + better behavior under DH rendering/LOD conditions)
  • Improved compatibility with C2ME (better behavior alongside async + threaded optimizations)
  • Additional fixes for modded structure rendering and overlay pipelines
  • More resilient behavior in complex modpack environments

Fixes & Cleanup

  • Fixed ArrayIndexOutOfBoundsException crash
  • Fixed structure overlay issues (visibility/alignment/incorrect overlay behavior)
  • Many smaller issue fixes, stability improvements, and edge-case hardening
  • Whole codebase fully cleaned up for long-term maintainability (less technical debt, clearer structure, fewer footguns)

Open Source