Just Don't Lag

just don't lag

Pure performance. Zero bloat. Made specifically to make Minecraft playable on low-end hardware.

just don't lag is built with one singular goal: maximum frame rates and zero stuttering. This modpack does not include shader support, fancy graphic enhancements, or gameplay altering mods. It is strictly a raw optimization pack designed to squeeze every bit of FPS out of your hardware.

🖥️ Test Bench & Benchmarks

All tests were performed using the pack's out of the box settings on standard vanilla terrain.

System Specs

• CPU: AMD Ryzen 7 7800X3D 8-Core Processor
• GPU: NVIDIA GeForce RTX 5070 Ti
• RAM Allocated: 6 GB (6144 MiB)
• Minecraft Version: 26.2 (Fabric)

FPS Performance

Note on Benchmarks: While the test numbers above were recorded on a high-end system with 6 GB of RAM allocated, do not let that mislead you. The core optimizations in this pack scale aggressively down to low-end hardware. You do not need a high-end PC or heavy RAM allocation, this pack is fully tailored to deliver a smooth, high-FPS experience even on modest setups running with just 2 to 4 GB of RAM.

Core Rendering & Engine Optimization

• Sodium – Replaces the engine for massive rendering performance.
• Lithium – Optimizes physics, chunk loading, and entity ticking.
• FerriteCore – Reduces memory usage.
• ModernFix – Speeds up launch times and patches memory leaks.
• ImmediatelyFast – Accelerates entity and HUD rendering.
• Nvidium – Uses mesh shaders for massive gains on compatible Nvidia cards.
• C2ME – Multi-threads chunk generation.
• ScalableLux – Optimizes world lighting calculations.

Culling & Particle Optimizations

• Entity Culling – Skips rendering entities behind walls.
• More Culling – Culls hidden block faces and particles.
• AsyncParticles – Offloads particle processing to background threads.
• ZFast Noise – Accelerates noise generation math.
• Immersive Optimization – Fine-tunes tick-based rendering logic.

Network & System Tweaks

• Krypton – Optimizes the networking stack to reduce packet lag.
• BadOptimizations – Lightmap and entity batching improvements.
• Dynamic FPS – Lowers resource usage when alt-tabbed.
• FastQuit – Saves single-player worlds in the background.
• AsyncLogger – Offloads console logging to prevent freeze spikes.
• LogCleaner & STFU – Cleans up redundant game log spam.
• Reflex – Reduces input delay.
• Structure Layout Optimizer – Speeds up structure placement calculations.

Utilities & Crash Prevention

• Fabric API – Core modding library.
• Mod Menu – View and configure installed mods.
• Cloth Config API – Configuration UI library.
• Resourceful Config – Configuration UI library.
• Placeholder API – Formatting utility library.
• CrashAssistant & Not Enough Crashes – Keeps the game from closing to desktop on minor errors.