ImmediatelyFast

HUD Rendering

Generally FPS should be around 40% higher in almost all scenarios. [Tested using IF 1.1.7 on 1.19.3]

Tested on a spigot server with different HUD elements on screen (Scoreboard, Potion effect overlay, Bossbars, Filled Chat, Extra hearts, Full Hotbar).

Text Rendering

Generally FPS should be around 2x higher when there are many signs or holograms around you. [Tested using IF 1.1.7 on 1.19.3]

Tested on a spigot server with 200 signs (Filled with text) on screen.

Block-Entity Rendering

Generally FPS should be around 20% higher when there are many block entities around you. [Tested using IF 1.1.7 on 1.19.3]

Tested on a spigot server with 400 chests on screen.

Compatibility

ImmediatelyFast is structured to interfere with mods as little as possible. It should work fine with most if not all mods and modpacks.

Known incompatibilities:

• OptiFabric / OptiFine
• Most closed source "clients" like LunarClient and LabyMod

If you encounter any issues, please report them on the Issue Tracker.

Config

ImmediatelyFast has a config file which can be found in the config folder of your Minecraft instance. Most options should be left at their default values, but some may be tweaked to improve performance or compatibility.

• font_atlas_resizing: Increases the sizes of the font atlas textures. This improves performance with high resolution or custom server fonts.
• map_atlas_generation: Puts the map textures into a single texture instead of multiple textures. This improves performance when many maps are on screen.
• hud_batching: Improves the performance of the HUD rendering by submitting less draw calls. If you experience issues with HUD elements, try disabling this optimization.
• fast_text_lookup: Caches some data between rendering text characters. This slightly improves performance when rendering a lot of text.
• avoid_redundant_framebuffer_switching: This optimization reduces the number of framebuffer switches when rendering many different things in the world (entities, particles, block entities, ...) or the HUD to increase FPS.
• experimental_disable_error_checking: Disables OpenGL error checking. This may improve performance on certain systems, but can cause hard to debug issues if enabled.
• experimental_disable_resource_pack_conflict_handling: Controls if ImmediatelyFast should scan resource packs for incompatible core shader modifications in oder to disable some conflicting optimizations. This can be disabled to force optimizations even if they may cause graphical issues with certain resource packs.
• experimental_sign_text_buffering: Buffers text on signs instead of re-rendering it every frame. May cause issues with high resolution or custom fonts.
• experimental_screen_batching: Improves the performance of some in-game screens rendering by submitting less draw calls.

Developer API

You can read the latest version of the API docs here.

Partners

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