[FIXES/UPD] Shadowed´s No More Lazy Chunk Loader

🌐 Need a Lag-Free Server?
This mod is fully server-side compatible! If you want to host a seamless exploration server for your friends, we've partnered with Bisect Hosting to give you an exclusive deal:

👉 CLICK HERE TO GET 25% OFF YOUR FIRST MONTH!

Can't find your mod loader or Minecraft version?

  Leave a comment with #MissingMM and specify which ones you need so we can add support for them!

(Demonstration of world creation with/without the mod: It's 3.94 seconds faster than Vanilla!)

Shadowed's No More Lazy Chunk Loader is a heavy-duty server-side performance mod. It completely eliminates the infamous chunk loading lag and micro-stutters when exploring the world by combining parallel I/O, directional chunk prioritization, collision-free noise caching, and adaptive throttling.

Whether you are flying at maximum speed with an Elytra or exploring new terrain, the server will intelligently manage CPU threads, prioritize chunks ahead of your movement direction, and dynamically protect TPS while keeping multiplayer farms and stationary players completely unaffected.

In Vanilla Minecraft, loading chunk data from the disk is done on a single thread, causing severe stutters when flying. This mod dispatches chunk NBT parsing and decompression to a dynamic thread pool alongside a collision-free ThreadLocal Perlin noise cache and directional chunk prioritization. This allows multiple chunks to be read, generated, and prioritized ahead of you without stalling the main game thread (while automatically deferring to C2ME, Moonrise, or Noisium when present).

When the server detects that the CPU is taking too long to process a tick (for example, when a player is generating chunks very quickly while flying), it will automatically pause Natural Mob Spawning and Random Block Ticks (crop growth, grass spreading) for that exact tick.

This frees up to 40% of the CPU instantaneously, dedicating 100% of the mathematical power to generating the terrain in front of you. Once you land, the simulation returns to normal instantly. (Note: Global random tick and spawning throttling only apply in Singleplayer to preserve Multiplayer fairness, while dedicated servers and LAN worlds keep full simulation parity).

Servers suffer heavily from ticking hundreds of entities in loaded chunks that players aren't even looking at. This mod intelligently reduces the ticking frequency of entities and block entities (like furnaces) that are far away from the nearest player, isolated per player and per dimension. Even if one player is flying fast with an Elytra, farms and entities near stationary players or in other dimensions continue ticking normally.

The mod automatically reads your CPU's available threads upon startup (fully safe on headless dedicated servers) and generates a customizable config file at .minecraft/config/shadoweds_no_more_lazy_chunk_loader.json. If you have a lower-end CPU (4 threads or less), it automatically calibrates chunk saving limits, noise cache size, and thread allocation to prevent disk and CPU bottlenecks.

* Note: This mod only alters server-side chunk processing and entity ticking. It is inherently 100% compatible with all client/server rendering optimization mods (such as Sodium, Embeddium, Rubidium, EntityCulling, Iris, Oculus, etc.).

WE ARE NOT RESPONSIBLE FOR CORRUPTION, IRREPARABLE DAMAGE, OR THE DELETION OF WORLDS: PLEASE MAKE SURE THAT, BEFORE INSTALLING OUR MOD, YOU DO NOT HAVE ANY OTHER AGGRESSIVE CHUNK-OPTIMIZATION MODS OR MODS THAT ARE NOT ON OUR LIST OF “Popular Compatible Mods”... Thank you for reading.

🔌 Complementary Recommendation: For the absolute best results, pair this mod with Sodium (Fabric / NeoForge) or Embeddium (Forge). While Shadowed's No More Lazy Chunk Loader completely eliminates CPU/Server-thread lag during chunk creation, a rendering mod ensures your GPU handles the visual updates just as fast!