About ImmediatelyFast
ImmediatelyFast is a lightweight client-side optimization mod that reworks how the game handles immediate mode rendering. Rather than pushing individual draw calls one after another, it uses a custom buffer structure to bundle rendering calls together and send information straight to your graphics card more cleanly. It targets elements across the screen, including text, particles, mobs, containers, and interface overlays.
In terms of gameplay and visuals, the mod does not alter how the game looks or how blocks function. Everything retains its normal visual appearance, but the game runs noticeably smoother in scenes that typically drag down frame rates. Areas packed with signs, large map walls, custom scoreboards, or dense clusters of livestock feel far less choppy because your processor spends significantly less time managing repetitive draw requests.
This mod suits anyone running on a machine where the processor limits performance, especially if you have a modest CPU paired with a capable dedicated GPU. If you frequent multiplayer servers where lobby scoreboards, floating text lines, player shops, and crowded animal pens choke your frame rate, you will see a noticeable jump in responsiveness. Players with top-tier processors or heavy shader loads will see smaller gains.
Fitting ImmediatelyFast into a custom modpack is straightforward because it is strictly client side and requires no external dependency libraries. It pairs smoothly alongside other rendering mods like Sodium, Iris, or Exordium, and it even optimizes immediate mode rendering created by third-party mods. However, you should avoid pairing it with OptiFine, OptiFabric, or closed-source clients such as LunarClient and LabyMod due to known conflicts.
Features
- Groups draw calls with a custom buffer implementation to upload data to the GPU more efficiently.
- Rewrites vanilla map rendering to process maps on screen using a single texture atlas.
- Accelerates on-screen text rendering for signs, chat, and server display text.
- Batches heads-up display and interface elements to reduce total draw call volume.
- Reduces redundant framebuffer switching during entity, particle, block entity, and interface rendering.
- Speeds up immediate mode rendering generated by other installed mods.
- Provides configuration options for font atlas sizing, screen batching, and sign text buffering.
Tips
- Expect the largest performance improvements when your CPU is the bottleneck rather than your graphics card.
- Disable the hud_batching setting in the configuration file if you encounter graphical issues with interface overlays.
- Enable font_atlas_resizing in the config if you play on servers using custom or high-resolution fonts.
- Combine it with Sodium, Iris, or Exordium to optimize different rendering paths simultaneously.
- Do not run this mod alongside OptiFine, OptiFabric, LunarClient, or LabyMod due to known incompatibilities.
How to install
- Install Fabric / Forge / NeoForge / Quilt for your Minecraft version (use the official installer).
- Download the file that matches your Minecraft version and Fabric / Forge / NeoForge / Quilt.
- Open the .minecraft folder and put the file into the "mods" folder (create it if missing).
- Launch Minecraft with the Fabric / Forge / NeoForge / Quilt profile.
FAQ
Do I need to install ImmediatelyFast on my server?
No, ImmediatelyFast is strictly client side and is not needed on the server. You only install it in your local Minecraft mod folder.
Which mod loaders and Minecraft versions are supported?
ImmediatelyFast supports Fabric, Forge, NeoForge, and Quilt across thirty game versions from 1.18.2 to 26.3. It requires no additional dependency mods to run.
Can I run ImmediatelyFast with Sodium and OptiFine?
It works well with Sodium, Iris, and Exordium. However, OptiFine and OptiFabric are known incompatibilities and should not be used together with it.
