Input Optimizer

# Kemmlow's Input Optimizer  Kemmlow's Input Optimizer is a **client-side** Fabric mod that **reduces the delay** between your physical mouse and keyboard inputs and the game registering them. ## What It Does  Minecraft processes mouse and keyboard input **later in the frame cycle** than it needs to. This mod corrects that by **reading input earlier**, feeding **fresher data** into the vanilla input pipeline, and **aligning input consumption** to the correct point in the render cycle. On **Windows, Linux, and macOS** the mod **bypasses the standard GLFW input layer** and reads **directly from OS level input APIs**. This is the **lowest level** a mod can access without writing a device driver. The result is that input from your physical device reaches the game **faster** and through **fewer intermediate layers**. **Keyboard input timing** is also improved on all platforms. This is not something comparable mods currently address. The **vanilla mouse smoothing algorithm is left completely intact**. The mod changes **nothing about how input feels**. ## What It Does Not Do This mod does **not** affect rendering performance or framerate. It does **not** change mouse sensitivity, combat mechanics, or any data visible to servers. It does **not** remove or alter vanilla mouse smoothing. **No configuration** is needed or available. The mod works **automatically on launch**. ## Why Download It If **input responsiveness** matters to you in any context, whether that is **PvP, building, speedrunning, or general play**, this mod **reduces the gap** between your physical input and the game acting on it. It does this **without changing any gameplay behavior** and **without requiring any setup**. ## Platform Support **Out of the box support** is provided for **Windows, Linux, and macOS**, including the full set of **lower level OS input API improvements**. **Partial support** is provided for **Android based Minecraft launchers**, where limited input timing improvements apply. On any other platform the mod loads and **falls back gracefully** without causing issues. ## Critical Information Before Downloading This mod is **client side only**. Servers do **not** need to install it and will **not** detect any change. The mod does **not** affect any server visible behavior. **Vanilla mouse smoothing is fully preserved**. ## Known Incompatibilities - [Raw Input Buffer](https://modrinth.com/mod/raw-input-buffer) - [Ixeris](https://modrinth.com/mod/ixeris) ## FAQ **Is this client side only?** Yes. Servers do not need to install anything. **Does this increase FPS?** No. This mod does not touch rendering performance. **Does this change how the mouse feels?** No. Vanilla smoothing is completely preserved. **Does this affect servers or other players?** No. All changes are local to the client input path only. **Will it work on my system?** Out of the box support is provided for **Windows, Linux, and macOS**. Partial support is provided for **Android based launchers**. The mod falls back gracefully on any other platform. ## License LGPL-3.0-only Copyright (c) Kemmlow