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BadOptimizations

Mod

by thosea

Optimization mod that focuses on things other than rendering

Type

Mod

CurseForge Downloads

82,433,879

CurseForge ID

949555

Modrinth Downloads

47,506,680

Modrinth ID

g96Z4WVZ

Last Updated

Nov 7, 2026

Description

BadOptimizations

A collection of mostly micro optimizations that add up to something bigger!

What does it do?

Multiple things:

  • Avoid updating lightmap
    Updating lightmap textures are one of the most expensive parts of the client tick. During each tick, the client will do vector math to calculate lightmaps for blocks and the sky, then upload that new texture to the GPU. However, this can be completely avoided and cached if nothing affecting block brightness has changed. This mod will cancel lightmap updates if nothing that changes block brightness (e.g. gamma slider, potion effects, dimension) has changed.
  • Sky color calculation optimizations
    Minecraft uses a cubic color sampler every frame to calculate the current sky color. This function loops 216 times to factor in surrounding biomes, even if all surrounding biomes are identical or have identical sky colors. This mod makes the color sampler only used if you are between biomes with different sky colors, and caches it for each tick. Otherwise, a shorter, simpler and faster sky color calculation is used.
  • Don't do debug logic if we don't need to
    Minecraft has four debug renderers that can be activated with a debug server: bees, game events, game test and villager AI. Even if there's nothing to process, the logic for these debug renderers are still executed. This mod will only execute them if debug is enabled and there is data from the server to process.

That's a few of them, at least. You can disable any optimization in the config file if you need to.

How much does it help?

Depends on your system and luck, but on my own PC, an RTX 3060, intel i7 12700 and 4GB of allocated ram on Fabulously Optimized:
Without toasts, it goes from 1926-1955 FPS:

To 2008-2023 FPS:

And with toasts, it goes from 1351-1384 FPS:

To 1414-1458 FPS:

My mod is incompatible!

You can mark your mod as incompatible with specific BadOptimizations options. If your mod is present, BadOptimizations will automatically disable the specific options you specify.

Dependencies?

None.

Find more on the GitHub page.
It's also available on Modrinth.

Compatibility

Mod Loaders

Client Neoforge

Game Versions

26.3

Recommended Gear

Affiliate

Hardware and extras that pair well with this mod.

Mini PC for self-hosting

Mini PC for Self-Hosting

A low-power box that can sit in a cupboard and run a modded server around the clock.

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Included in Modpacks (2,696)

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glutchy's performance modpack glutchy's performance modpack Peace Optimizer Peace Optimizer Performium [expanded] Performium [expanded] DonutSMP Enhanced DonutSMP Enhanced Bosstimized Bosstimized Cogwheels and Wires Cogwheels and Wires Hyblock Hyblock Amethyst Eclipse Amethyst Eclipse Horror Magiced Horror Magiced Vanilla Refined Vanilla Refined RE:mix RE:mix Tensura Cardinal Awakening Tensura Cardinal Awakening Wayward Wayward Vulkan: X-Lite Vulkan: X-Lite Fantastically Optimised (Vulkan) Fantastically Optimised (Vulkan) NotYourAvragePack NotYourAvragePack SuperCraft SuperCraft Bastelgruppen Client Optimized Bastelgruppen Client Optimized MYTHORIA MYTHORIA Refabricated Villagers: Vanilla+ Refabricated Villagers: Vanilla+ Archimedes S7 Pack Archimedes S7 Pack Hypixel Modpack P0 Hypixel Modpack P0 Cobble X Friends Cobble X Friends Venture INC. Venture INC. Advance Optimization Advance Optimization Vanilla: Remixed Vanilla: Remixed Graviton Graviton NAF Modpack NAF Modpack Captain Ratax's Vanilla Modpack Captain Ratax's Vanilla Modpack AVD (Average Vanilla Desire) AVD (Average Vanilla Desire) Just Vanilla+ Just Vanilla+ EwServer Vanilla++ Vanilla++ LG Optimized LG Optimized The Roaring 20's Oasis The Roaring 20's Oasis Aero and Additions Aero and Additions Vanilla Cataclysst Vanilla Cataclysst Vanilla Enhanced Vanilla Enhanced Sharkingo! Sharkingo! StunningRPGBasicXP+ StunningRPGBasicXP+ MonsterQuest + MonsterQuest + Kryeit++ Kryeit++ AsrixBD Modpack AsrixBD Modpack Hermit Crab Hermit Crab Weathered Weathered Beyond Vanilla Beyond Vanilla nonnButter's Vulkan Optimization nonnButter's Vulkan Optimization CreateAbility CreateAbility Craftouille-instance Craftouille-instance Matched Matched Purely Optimized Purely Optimized Mac Native Mac Native Experium - VT Experium - VT Explorifying Explorifying Trailer Vibes Lite Trailer Vibes Lite Steam Gardens SMP Steam Gardens SMP Skyblock: But Better Skyblock: But Better Gambit Modpack Gambit Modpack Vanilla Boosted Vanilla Boosted PeakMine PeakMine Maincra Maincra seleno's optimizations seleno's optimizations Bob's Neoserver mods Astral Project Astral Project BIG CLIENT BIG CLIENT Kingdom Network Kingdom Network fedcraft Console Refined Console Refined rodent rodent Fir3fr0gPersonalPack Fir3fr0gPersonalPack Saniasu Saniasu Flying Delight Modpack Flying Delight Modpack Ultimized Rebuilt Ultimized Rebuilt Vanilla Core Plus Vanilla Core Plus Rainium Rainium Kinetic Civilisation Kinetic Civilisation Cadmium Cadmium Tula Grande Tula Grande HoM - Cobblemon World HoM - Cobblemon World Create Intense Create Intense Holiday blocks Holiday blocks ScenicCraft ScenicCraft Efficient Vulkan Efficient Vulkan NeoCraft: Horizons NeoCraft: Horizons Forever World Plus Forever World Plus By Design OutBlocks: Simply Build OutBlocks: Simply Build ZuiderSchemer Pack ZuiderSchemer Pack Performium Revived Performium Revived Azura Adventure Azura Adventure Ascension by void Ascension by void Latveria Latveria Qwnks's Better Adventures Qwnks's Better Adventures Heavily Optimized Heavily Optimized Full Scale Full Scale Extra Optimized QoL Extra Optimized QoL En+anced Plus En+anced Plus X-Factor Optimization X-Factor Optimization a Totally Normal Vanilla+ Modpack a Totally Normal Vanilla+ Modpack STHI Optimized STHI Optimized

External Resources

CurseForge Modrinth Source Code Issues