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CoreOptimizer project artwork

CurseForge · Minecraft mod

CoreOptimizer

A lightweight performance mod that optimizes render overhead and removes F3 debug screen micro-stutters without disabling or hiding the HUD.

Choose a version Pick your version below, then grab the matching file.

Quick answer

Which CoreOptimizer release should I use?

Updated yesterday
Latest stable file CoreOptimizer 0.1 .jar
Game version 1.20.1
Loader Forge

CoreOptimizer 0.1 .jar targets 1.20.1 with Forge. The project page does not say whether this file belongs on the client, dedicated server, or both. No extra mods listed for this file.

Where it goes

Is CoreOptimizer required on the client, server, or both?

The project page does not say whether this file belongs on the client, dedicated server, or both.

Client Source doesn’t say
Dedicated server Source doesn’t say
Loader for this release Forge
Required install it here Optional supported, not mandatory Not supported do not install here Source doesn’t say do not assume

The source does not explicitly classify this release as client-only or server-only.

Understand client and server requirements Read the Minecraft installation guide

What else does CoreOptimizer 0.1 .jar need?

CoreOptimizer 0.1 .jar. Change the file and its required mods may change too.

No extra mods listed for this file

This file does not list any required mods. Do not add a library just because a different file uses it.

This file does not list any required or optional mods.

Before you install it

Add CoreOptimizer without breaking your instance.

Built for CoreOptimizer 0.1 .jar. Pick another file and the loader, install side or required mods may change.

  1. 01

    Stick to this file

    Use CoreOptimizer 0.1 .jar. It targets 1.20.1 with Forge; another release may have different loader, side or dependency requirements.

  2. 02

    Bring the mods it needs

    This file does not list any required mods. Do not add a library just because a different file uses it.

  3. 03

    Put it on the correct side

    The project page does not say whether this file belongs on the client, dedicated server, or both.

  4. 04

    Pick the file you checked

    Use the “Get this file” button beside CoreOptimizer 0.1 .jar. It opens that exact file at the source.

About this project

What does CoreOptimizer add?

🛠️ CoreOptimizer

CoreOptimizer is a comprehensive, lightweight performance and quality-of-life utility mod for Minecraft 1.20.1 (Forge). It cleans up UI clutter, fixes vanilla micro-stutters, optimizes key game mechanics, and enhances client-server efficiency without adding unnecessary bloat.

✨ Features & Optimizations

  • Clean & Lightweight F3 HUD (F3HUDHandler): Removes excessive debug clutter from the F3 screen, offering a clean, modern display for core metrics like FPS and performance stats with reduced rendering overhead.

  • Step Assist (StepAssistHandler): Allows your character to smoothly walk over 1-block high obstacles without needing to constant jump.

  • Lag-Free Screenshots (HighResScreenshotHandler & ScreenshotMixin): Captures high-resolution screenshots without experiencing the classic single-frame freezes or micro-stutters.

  • Furnace & Workbench Performance (FastFurnaceMixin & FastWorkBenchMixin): Optimizes tick logic for furnace smelting and crafting table inventory interactions to eliminate UI delay.

  • Privacy & Telemetry Stripping (NoTelemetryMixin): Completely blocks background Mojang telemetry and data tracking services.

  • Visual & Camera Smoothness (FlickerFixMixin, DamageTiltMixin, ViewBobbingMixin): Fixes interface and texture flickering while refining camera tilt and view bobbing mechanics.

  • Seamless Dimension Travel (DimensionalSyncFixesMixin & NetherPortalFixMixin): Smoothes out portal transitions and prevents dimension loading freezes between the Overworld, Nether, and End.

  • Quality of Life Bug Fixes:

    • ItemSplitFixMixin: Fixes item dragging and splitting glitches inside inventories.

    • MaxHealthFixMixin: Prevents health bar desynchronization when maximum health updates dynamically.

    • NoVillagerDeathLogMixin: Prevents villager death spam from cluttering your client and server logs.

📦 About This Project

CoreOptimizer serves as an all-in-one performance core. It adds zero items or blocks to the game, maintaining high compatibility across both singleplayer worlds and modded servers.

Project description from CurseForge.

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CoreOptimizer by Minecraft version and loader

Choose the version and loader you play, then open the matching release.

1 available setups

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Recent files

CoreOptimizer versions and loaders

5 of 5 releases match

Looking for an older file? The official CurseForge project page is in Resources.

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