ImmediatelyFast (1.18.2 → 1.21.8) — Smooth Rendering, Turbocharged FPS

When your Minecraft starts stuttering especially in crowded situations like mobs, signs, or complex HUDs you know it’s time to optimize. I discovered ImmediatelyFast after feeling stuck at mid-60s FPS with heavy GUI overlays. It promised to clean things up without extra visual fluff. Once installed, it transformed even busy scenes into silky-smooth experiences.

This mod is designed to optimize immediate mode rendering that’s everything from entity animations to HUDs and text with a clever buffer and draw-call batching system. It doesn’t add new visuals; it just makes existing ones run faster.

What the Mod Does

• Installs cleanly on Fabric, Forge, NeoForge, or Quilt just drop it in and let it do its thing.
• Speeds up rendering of entities, particles, block entities, text, maps, HUDs anything that’s drawn every frame.
• Uses a custom “batching” system to combine many small draw calls into fewer, more substantial ones—this is like swapping out “draw each frame” for “draw in bigger, efficient chunks.”
• Especially effective when your CPU not GPU is the weak link, which is common on mid-tier machines.

Real-World Results

On a Ryzen 5 1600 with GTX 1060, here’s how ImmediatelyFast stacks up (tested in 1.19.3):

You notice the biggest gains when the game is cluttered exactly when you need the performance the most.

Voices from the Community

On r/feedthebeast, someone who had locked down most performance mods said:

“It replaces HUD, particles, and text with optimized code batching draw commands so your FPS gets a real boost.”

Another player noticed a subtle change:

“My frame rate went from fluctuating around 520–500 FPS to a stable 520–540 FPS. I also felt I could render farther without stutter maybe that’s part of the mod too.”

These impressions show that for many, it’s not just numbers it’s smoother feeling gameplay.

Compatibility & Fine-Tuning

ImmediatelyFast plays nicely with most setups and is made to stay out of your way. That said, it’s not compatible with OptiFine, OptiFabric, VulkanMod, or most proprietary clients like LunarClient or LabyMod.

The config—found in your config folder—lets you fine-tune if needed:

• map_atlas_generation: Combine map textures for faster rendering when maps are everywhere.
• hud_batching: Reduces draw calls for HUD elements—great for cluttered UIs.
• fast_text_lookup: Speed up rendering of signs, tool tips, and chat.
• avoid_redundant_framebuffer_switching: Smooths transitions between UI, world, and entities.

Advanced options let you disable resource pack scanning or OpenGL error checking, but these are for edge-case tweaking and should be used carefully.

Should You Use It?

If you’ve ever thought, “I wish Minecraft just ran smoother,” and your FPS bottleneck seemed CPU-related, ImmediatelyFast should be your first stop. It does one thing and it does it cleanly and effectively.

Pros:

• Massive FPS boosts where it counts
• Lightweight and easy to install
• Compatible across loaders from 1.18.2 to 1.21.8
• Great for modded or intensive map setups

Considerations:

• Not compatible with OptiFine or proprietary clients
• Full power only visible when CPU is limiting factor
• Config tweaks available, but default configuration works well for most

Video review