ImmediatelyFast

Speeds up immediate-mode rendering in Minecraft. A small, focused optimization mod that stacks with Sodium and Iris without conflicts. Over 183 million downloads on CurseForge [citation:7].

Quick facts

CategoryPerformance / Rendering
LoaderFabric, NeoForge, Quilt
Minecraft26.3 and older supported versions [citation:15]
AuthorRaphiMC
SourceCurseForge / Modrinth
Downloads183.0M (CurseForge, Sep 2026) [citation:7]
SideClient-side

Source status

Verified

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What ImmediatelyFast does

Minecraft uses immediate-mode rendering for many things: entities, particles, text, and parts of the GUI. ImmediatelyFast batches these draw calls and uploads data to the GPU more efficiently [citation:15].

The effect is most noticeable on servers with many players or entities. In a test with 1000 entities in render distance, frame rates improved significantly with both vanilla and Sodium [citation:15].

What it optimizes

  • Entities — mobs, items, and players.
  • Block entities — chests, signs, and machines.
  • Particles — all particle types.
  • Text — chat and HUD text rendering.
  • GUI — inventory and menu rendering.
  • Maps — held map rendering.

Installation

  1. Install Fabric, NeoForge, or Quilt for your Minecraft version.
  2. Download the ImmediatelyFast JAR from CurseForge for your loader and version [citation:3].
  3. Place it in the mods folder.
  4. Launch the game. No configuration required.
Stacks with Sodium: ImmediatelyFast targets a different part of the rendering pipeline than Sodium. Sodium optimizes chunk and terrain rendering. ImmediatelyFast optimizes entity, particle, and GUI rendering. Install both for maximum benefit.

Compatibility

ImmediatelyFast is designed to be compatible with most mods. Known incompatibilities include some closed-source clients like Lunar Client and LabyMod [citation:15]. For standard Fabric or NeoForge setups, conflicts are rare.

Frequently asked questions

Will ImmediatelyFast work on a server?
ImmediatelyFast is client-side. The server does not need it. It works on any server that allows client-side mods.
Does ImmediatelyFast conflict with Iris?
No. ImmediatelyFast and Iris target different rendering systems. They coexist without issues.
Why is my FPS not improving?
ImmediatelyFast targets immediate-mode rendering, which is a specific bottleneck. If your FPS is limited by terrain complexity or chunk loading, Sodium will have a larger effect. Use both together for the best results.

Related mods

Sodium

Terrain and chunk rendering optimization.

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