ImmediatelyFast in All the Mods 10

ImmediatelyFast is an open source, client-side performance mod. It speeds up immediate mode rendering, and it's built to be lightweight and play nicely with other mods. It adds no gameplay of its own. You install it and get smoother FPS.^[1]

In this pack you get the NeoForge build 1.6.13+1.21.1. It has been in the pack since All the Mods 10 2.25 or earlier.^[2]

What it speeds up

It swaps in a custom buffer implementation that batches draw calls and uploads data to the GPU more efficiently. That generally covers these areas:^[1]

• Entities and block entities^[1]
• Particles^[1]
• Text rendering^[1]
• GUI and HUD^[1]
• Immediate mode rendering from other mods^[1]

It also replaces some vanilla code with faster versions for map rendering, HUD rendering and text rendering.^[1]

Who it helps

Anyone whose CPU is the bottleneck. The mod's author says it can only raise FPS in that situation, and that slower CPUs benefit more than very fast ones. You'll notice it most around lots of entities, many maps, or many signs.^[1]

The author's own test with 1000 cows on screen went from 16 FPS to 60 FPS. Those numbers came from a Ryzen 5 1600 with a GTX 1060, on Minecraft 1.19.3 with an older version of the mod. Treat them as an example of the effect, not a promise for this pack.^[1]

Config and compatibility

The mod has a config file in your instance's config folder. The author recommends leaving most options at their defaults. If HUD elements act strangely, the author suggests turning off the hud_batching option. The values this pack ships for these options aren't shown in the sources.^[1]

The author lists OptiFabric and OptiFine as known incompatibilities, along with most closed source clients such as LunarClient and LabyMod.^[1]

Unverified The sources don't show where this mod fits in the pack's progression. They don't show it on the ATM Star path, and they don't show any quests, items or recipes tied to it.

Good news: there's nothing to craft or set up first. ImmediatelyFast is a rendering optimization mod. It improves the immediate mode rendering performance of the client and is designed to be lightweight and compatible with other mods.^[1]

Unverified I couldn't confirm any items, recipes or quests for this mod in this pack, so there is no crafting order to follow and no recipe blocks to show.

What it speeds up

The mod uses a custom buffer implementation that batches draw calls and uploads data to the GPU more efficiently. That applies to these areas:^[1]

• Entities and block entities^[1]
• Particles^[1]
• Text rendering^[1]
• The GUI and HUD^[1]
• Immediate mode rendering from other mods^[1]

It also replaces some vanilla code with faster versions, specifically for map rendering, HUD rendering and text rendering.^[1]

What to expect

The mod only helps when your CPU is the bottleneck. That is most likely the case unless your GPU is ancient or you run very heavy shaders. Slower CPUs benefit more than really fast ones.^[1]

The mod's author reports the biggest gains in busy scenes: roughly 2x higher FPS with many entities or many signs around you, and roughly 5x higher with many maps on screen. Those figures were measured with older mod versions on Minecraft 1.19.3, not in this pack, so treat them as a rough guide to where the mod helps rather than what you'll see here.^[1]

ImmediatelyFast doesn't add machines, multiblocks, power, fluids or item handling, so there is nothing to build or automate with it. It's a client-side performance mod that speeds up immediate mode rendering, and the only "mechanic" is how it draws things on your screen.^[1]

How it works

The mod swaps in a custom buffer implementation that batches draw calls and uploads data to the GPU more efficiently. This covers entities, block entities, particles, text rendering, the GUI/HUD, and the immediate mode rendering of other mods.^[1]

It also makes targeted changes where vanilla rendering code is replaced with a faster implementation. Those targeted changes cover map rendering, HUD rendering and text rendering.^[1]

When you'll notice it

The mod can only raise your FPS when your CPU is the bottleneck. That's most likely the case unless your GPU is ancient or you run very heavy shaders, and slower CPUs benefit more than very fast ones.^[1]

The author's own benchmarks were run on Minecraft 1.19.3 with early versions of the mod, not on this pack's version, so treat them as a rough guide only. They reported FPS around 2x higher on busy servers for entity rendering, about 5x higher with many maps on screen, about 40% higher for the HUD, about 2x higher with many signs or holograms, and about 20% higher with many block entities nearby.^[1]

Config options

The mod's project page describes a config file in the config folder of the instance, and says most options should stay at their defaults. These are the options it lists:^[1]

• font_atlas_resizing: increases the size of the font atlas textures, which helps with high resolution or custom server fonts.^[1]
• map_atlas_generation: puts map textures into a single texture instead of several, which helps when many maps are on screen.^[1]
• hud_batching: submits fewer draw calls for the HUD. If HUD elements look wrong, the page suggests disabling it.^[1]
• fast_text_lookup: caches some data between text characters, which slightly improves performance when rendering a lot of text.^[1]

Unverified No config file for this mod was available for this pack, so the values the pack actually uses for these options are unconfirmed. The descriptions above come from the mod's project page and describe the mod in general, not this pack's settings.

All the Mods 10 8.1 ships ImmediatelyFast 1.6.13+1.21.1, using the NeoForge jar. The mod has been in the pack since All the Mods 10 2.25 or earlier. Since then the pack changelogs only show version bumps, listed here from newest to oldest.^[2]

• 8.1: updated from 1.6.11+1.21.1 to 1.6.13+1.21.1.^[3]
• 7.2: updated from 1.6.10+1.21.1 to 1.6.11+1.21.1.^[4]
• 5.5: updated from 1.6.7+1.21.1 to 1.6.10+1.21.1.^[5]
• 4.12: updated from 1.6.6+1.21.1 to 1.6.7+1.21.1.^[6]
• 4.3: updated from 1.6.5+1.21.1 to 1.6.6+1.21.1.^[7]
• 2.42: updated from 1.6.2+1.21.1 to 1.6.5+1.21.1.^[8]
• 2.41: updated from 1.6.1+1.21.1 to 1.6.2+1.21.1.^[9]
• 2.40: updated from 1.6.0+1.21.1 to 1.6.1+1.21.1.^[10]
• 2.39: updated from 1.3.5+1.21.1 to 1.6.0+1.21.1, the biggest jump in the list.^[11]
• 2.37: updated from 1.3.4+1.21.1 to 1.3.5+1.21.1.^[12]
• 2.30: updated from 1.3.3+1.21.1 to 1.3.4+1.21.1.^[13]

Unverified What actually changed inside each ImmediatelyFast release, such as fixes, performance work or config changes, isn't covered by the sources I have. There are no stored changelogs for the shipped jars, so check the mod's own release notes if you need details.