FastItems

Fast Items is a popular optimization mod for Minecraft designed to improve frame rates (FPS) by simplifying how dropped items render in the game world. Core Features

Developed primarily for loaders like Fabric, the mod targets performance issues caused by hundreds of 3D item entities floating on the ground:

2D Transformation: It changes 3D dropped item entities into flat, 2D forms.

Billboard Effect: 3D blocks and items are modified to always face the player’s camera, mimicking the classic behavior found in PvP clients like Lunar Client.

Side-Culling: For inherently flat items (like potions or tools), it stops rendering their side thickness entirely to ensure they are completely flat and cheap to render.

Configurable Settings: You can easily toggle the mod, item shadows, or block model impacts on or off through a mod menu. Performance Impact

In vanilla Minecraft, dropped items render with full 3D voxels and rotate continuously. When automatic farms or players drop massive quantities of items, this creates severe graphical lag. By flattening the models and reducing vertices, Fast Items drastically lowers the rendering overhead. Related Optimization Mods

If you are looking to optimize item performance further, you might also consider:

Fast Item Frames: Converts laggy vanilla item frame entities into high-performance blocks, allowing you to dye backgrounds or make invisible displays.

RetroItems: Re-implements older Minecraft rendering styles, preventing items from merging together while offering optional flat rendering for performance.

The core mod files and update logs are available directly via the Fast Items Modrinth Project Page or the Fast Items Versions Tab. Fast Items – Minecraft Mod – Modrinth