You've spent weeks carefully assembling the ultimate 500+ mod pack. You hit play, wait 10 agonizing minutes, and the game suddenly crashes on a single modded fence rendering bug. You open your log file to find out why, and you're staring at 150,000 lines of harmless, unreadable red warning spam from 50 different mods. Finding the real error is like finding a needle in a haystack.

Not anymore.

NytheriaOptimiser is an invisible powerhouse designed to stabilize, optimize, and sanitize massive Fabric modpacks. No commands to run, no massive configs to tweak — just drop it in and let it do the heavy lifting behind the scenes.

✨ Features

Ultimate Log Sanitization Sick of an unreadable console? NytheriaOptimiser intercepts the logger at its core, dynamically catching and discarding over 50+ known, harmless [WARN] and [ERROR] messages from popular mods. By cutting log spam by over 92%, you save disk I/O, speed up boot times, and can actually read your logs when a real crash happens.
The "Diagonal" Crash Fixer Using mods like DiagonalFences, DiagonalWalls, or DiagonalWindows alongside massive content mods used to mean guaranteed model baking crashes. Our Auto-Fixer dynamically scans your modlist as the game loads and automatically skips incompatible block models, eliminating the crashes without disabling the mods.
EveryComp Turbo Caching EveryComp is amazing for wood compatibility, but its block-state generation can cripple client resource loading. NytheriaOptimiser introduces a deferred, high-performance cache hashing system that shaves immense overhead off resource reload times.
Self-Healing Configs Certain mods regularly generate broken caches or conflicting registry keys (like Sawmill duplicating carpenter recipes or Better Beacons caching issues). The Optimiser detects these issues on launch, silently deleting or repairing the problematic data before the game can crash.
DataFixer Stubbing It prevents DFU (DataFixerUpper) panics by registering safe stubs for missing entity types, keeping your worlds upgrading cleanly and safely.

Optimized for massive modpacks. Built for stability. Get your boot times back, save your server disk space, and finally gaze upon a beautifully clean console.