Ever stared at the NeoForge loading screen wondering why it takes so long? LoaderOptimization gets to work before your world even loads warming up registries, caching resource metadata, trimming redundant class scanning, and pre-sorting event listeners so the modloader hits the ground running instead of stumbling through cold startup.

Once you're in-game, the built-in /loaderopt command gives you a live window into everything happening under the hood. Check your startup phase timings, inspect registry sizes by namespace, see tick stats, monitor your intern cache hit rate, pull a full JVM heap and GC breakdown, and run a complete one-shot analysis all without leaving the game.

Every optimization is individually toggleable from the in-game config screen. Nothing is hardcoded, nothing touches other mods' internals, and there are no mixins. LoaderOptimization works quietly alongside any other mod in your pack.

Features:

Registry warm-up — pre-sizes hash maps before world load to eliminate freeze spikes
Pack metadata caching — skips unchanged resource packs on reload
Background resource scanning — offloads the mods folder scan to a daemon thread
ResourceLocation intern cache — deduplicates repeated location objects during startup
Slow tick detection — logs any server tick that exceeds your configured threshold
Startup phase timings — see exactly where your load time is going
/loaderopt command suite — status, timings, ticks, registry, mods, memory, intern cache, full analysis, and reset