ImmediatelyFast | Faster HUD, Text & Entity Rendering

The first thing you notice after installing ImmediatelyFast isn't a new visual. Your HUD, nametags, and item icons look exactly the same. What you notice is crowded scenes suddenly holding their frame rate: mob pens, item frame walls, and packed modded inventory screens stop stuttering. That's because this open source mod by RaphiMC reworks how the client handles immediate mode rendering, the draw path behind all of those small elements. It has picked up around 105 million downloads, and it's still in active development.

The rendering bottleneck ImmediatelyFast fixes

Minecraft draws a lot of small things one at a time. Text, GUI elements, particles, entity overlays, and block entities all go through the immediate mode rendering path, which fires off many tiny draw calls. Each call carries overhead, and on a busy screen that overhead piles up fast. ImmediatelyFast swaps in a custom buffer implementation that batches those draw calls and uploads the data to your GPU in fewer, more efficient chunks.

That covers the immediate mode rendering of:

• Entities
• Block entities
• Particles
• Text
• The GUI and HUD
• Other mods that render in immediate mode

It also ships targeted rewrites of a few vanilla systems, namely map rendering, HUD rendering, and text rendering.

Where the FPS gains show up

The developer publishes benchmarks, and the biggest numbers come from the busiest screens. In an entity stress test with 1,000 cows on screen, FPS went from 16 to 60 with no other performance mods installed, and from 21 to 82 with Sodium running. Even with Sodium plus a shader setup active, the same test improved from 60 to 76 FPS. Maps are the other standout: with roughly 930 maps on screen, FPS jumped from 50 to 310, about sixfold. The developer also reports around 40% higher FPS for HUD rendering in general, which matters most if you run a text-heavy custom HUD like Simple HUD Enhanced.

One caveat before you run your own tests. ImmediatelyFast only improves FPS when your CPU is the bottleneck. Heavy shader players are usually GPU-bound instead, so gains shrink there. Slower CPUs also see bigger gains than very fast ones. The published benchmarks were taken on a Ryzen 5 1600 with a GTX 1060.

For crowded areas, this pairs naturally with Entity Culling. That mod stops the game from drawing entities you can't see in the first place, while ImmediatelyFast speeds up drawing everything that remains. Together they cover both halves of the problem.

Compatibility with Sodium and big modpacks

ImmediatelyFast is structured to interfere with other mods as little as possible, and it should work fine with most mods and modpacks. Sodium is explicitly supported. The two mods optimize different rendering stages, so Sodium accelerates the world while ImmediatelyFast accelerates everything drawn on top of it. In the developer's benchmark, adding it to an existing Sodium setup pushed FPS from 315 to 410.

Because it's client-side only, there's nothing to install on a server, and gameplay is untouched. The known-conflict list is short. Most closed-source prebuilt clients don't get along with it, and one legacy all-in-one mod is a listed incompatibility, flagged in the install steps below. If a niche overlay or HUD mod ever misrenders, you don't have to remove ImmediatelyFast. Every optimization can be toggled individually in the config, so you can switch off just the one causing trouble and keep the rest.

How to install ImmediatelyFast

It's a standard client-side install that takes a couple of minutes.

1. Install a mod loader first. Fabric, Forge, NeoForge, and Quilt are all supported, and each has its own installer.
2. Download the ImmediatelyFast file that matches your loader from the official project page, or from the download table on this page.
3. If you currently run OptiFine, remove it before adding this mod. The two are a known incompatibility, and most closed-source prebuilt clients conflict with it as well.
4. Drop the .jar file into the mods folder of your Minecraft instance. Most launchers have a button that opens that folder directly.
5. Start the game with your loader profile. No configuration is needed, and the mod works out of the box.
6. Optional: the config file lives in the config folder of your instance. Leave most options at their defaults, but you can toggle individual optimizations there if something misrenders.

ImmediatelyFast FAQ

Is ImmediatelyFast a client-side or server-side mod?

Client-side only. It has no gameplay effect, and servers are unsupported. Every player who wants the boost installs it on their own client.

Does ImmediatelyFast work with Sodium?

Yes, and it's designed to. The two mods optimize different rendering stages, so they stack. In the developer's benchmark, adding it to a Sodium setup took FPS from 315 to 410.

How much FPS improvement should I expect?

It depends on where your bottleneck is. The mod only helps when the CPU is limiting you, so heavy shader players often see smaller gains. On busy screens full of entities, maps, or HUD text, the difference can be dramatic, and slower CPUs benefit more than very fast ones.

Can I turn off individual optimizations?

Yes. It works out of the box with safe defaults, and every optimization can be toggled individually in the config file, which sits in the config folder of your instance. Options include font_atlas_resizing for high-resolution fonts, map_atlas_generation for map-heavy scenes, and fast_text_lookup for a small text rendering gain. Experimental toggles exist too, but the project warns they can cause hard-to-debug issues.

Grab the build for your loader from the download table above, and if this is your first mod, our guide to installing Minecraft mods walks through the whole process. To round out a bigger performance setup, our Xenon post covers another solid option for large modpacks.

Screenshots: ImmediatelyFast · via CurseForge