# Levviata’s Optimization Pack<\/p>\n
## NOTE:<\/p>\n
When you first run the modpack, your game WILL crash; this is expected, however.<\/p>\n
Reboot your game and you will be totally fine.<\/p>\n
(issue on GitHub + reason why this unavoidably happens).<\/p>\n
To download Vintagium latest release,
\nplease join Cleanroom’s Discord server
\nand check the # \ud83c\udf1f information channel,
\nyou will see the latest release there.<\/p>\n
### OPTIFINE IS NOT SUPPORTED
\n_(see more on “Known Issues \/ Known Incompatibilities” section)_<\/p>\n
A Forge\/~~Cleanroom~~ ([Cleanroom](discord.gg\/f2K4aSpG4F) support is planned) modpack
\nthat uses the latest optimization mods for Minecraft 1.12.2 while adding no other gameplay,
\nQoL, etc. features.<\/p>\n
Intended to use in new singleplayer playthroughs as a standalone,
\nbut I will eventually release server-only instances and instructions for integration in existing modpacks.<\/p>\n
(there is not enough testing,
\nbut please try it
\nand open an issue in the tracker
\nif you have any problem.)<\/p>\n
(the modpack name on the web (modrinth, CurseForge, and GitHub) is “Levviata’s Optimization Pack” for visibility,
\nthe pack is named “Optimum” internally)<\/p>\n
## Features
\n**Mods included in the modpack are the following (embedded and external):**
\n– **Core:**
\n – Alfheim (lighting engine)
\n – A lighting engine. Completely reworks and optimizes the lighting engine
\n – Nothirium + Naughthirium (render engine) -> _NOTE: Naughthirium adds compatibility with CensoredASM and Nothirium, it is needed._
\n – A chunk render engine. Reworks and (hopefully) optimizes chunk rendering
\n – CensoredASM (optimizes ram, fixes crashes, and optimizes code in general)
\n – Minecraft bytecode hackery. Optimizes a lot of Minecraft’s code with positive results
\n – Entity Culling (1.12.2-only maintained entity culling)
\n – A entity culling render system. Hides entities that aren’t visible on your screen
\n – Universal Tweaks (general tweaks\/bugfixes)
\n – Packs a lot of minor changes into one big mod. A LOT of bugfixes and tweaks
\n – VintageFix (FoamFix replacer)
\n – Blockstate\/model optimizations. Improves memory usage and load times
\n – StellarCore (low invasiveness and high impact tweaker)
\n – A high impact but low invasiveness mod that fixes other mods (vanilla too), bug fixes, and improves performance.
\n – Particle Culling (less particle lag)
\n – A particle culling render system. Hides particles that aren’t visible on your screen
\n – MixinBooter (core library)
\n – Mixin 101. Handles code injection and a lot of other nerdy things
\n– **Minor Fixes:**
\n – Better Biome Blend (biome color blender optimizer)
\n – Better-looking biome blending and optimizes the biome blend algorithm
\n – Clumps (Xp orb clump)
\n – Clumps experience orbs into one to improve performance (fewer entities = better)
\n– **Utility or Library:**
\n – File director (utility)
\n – Moves, downloads, and handles files for the modpack
\n – ConfigAnyTime (library)
\n – Lets config be edited at any time
\n – RedCore (library)
\n – Amazing library for developers
\n – RenderLib (library)
\n – A rendering library<\/p>\n
## External Mods \/ Bundled Mods
\nThis modpack uses File Director to download these mods from CurseForge:
\n– Entity Culling
\n– Nothirium
\n– RenderLib
\n– Multithreaded Noise<\/p>\n
_(“File Director” is a Minecraft Forge mod
\nthat allows you to download and manage mods in modpacks)_<\/p>\n
These mods were redistributed\/bundled with the modpack for convenience (see “Credits \/ Copyright Notice” section for more information):
\n– Censored ASM
\n– StellarCore<\/p>\n
## Performance Comparison
\nTODO: add images for comparison (against vanilla, etc.)
\nalso check how Entity Cull (current) differs from the other Entity Cull (by tr7zw)<\/p>\n
## Known Issues \/ Known Incompatibilities
\nPlease see Known Issues
\nand Incompatibilities.<\/p>\n
## Other Mods \/ Useful Resources Please see Other Mods and Useful Resources.<\/p>\n ## Credits \/ Copyright Notice ## Links<\/p>\n CurseForge: https:\/\/www.curseforge.com\/minecraft\/modpacks\/levviatas-optimization-pack<\/p>\n Modrinth: https:\/\/modrinth.com\/modpack\/levviatas-optimization-pack (you are here)<\/p>\n GitHub: https:\/\/github.com\/Levviata\/Levviatas-Optimization-Pack (source)<\/p>\n ## License That is a short summary of what is most important, please read the full license below:<\/p>\n License: https:\/\/github.com\/Levviata\/Levviatas-Optimization-Pack\/blob\/main\/LICENSE.txt<\/p>\n","protected":false},"excerpt":{"rendered":" A Forge 1.12.2 only modpack with pure optimizations and nothing else.<\/p>\n","protected":false},"featured_media":93432,"template":"","meta":{"_minecraft_slug":"levviatas-optimization-pack","_minecraft_project_id":"QsAXBvnI","_minecraft_author":"Levviata","_minecraft_license":"BSD-3-Clause","_minecraft_downloads":2239,"_minecraft_follows":0,"_minecraft_client_side":"required","_minecraft_server_side":"unsupported","_minecraft_storage_type":"zip","_minecraft_archive_name":"levviatas-optimization-pack.zip","_minecraft_size_bytes":8412820,"_minecraft_version_count":5,"_minecraft_updated_at":"2026-05-17T05:18:32.604590Z","_minecraft_date_created":"2025-01-22T06:00:53.717013Z","_minecraft_date_modified":"2025-01-27T16:30:19.598139Z","_minecraft_project_url":"https:\/\/modrinth.com\/mod\/levviatas-optimization-pack","_minecraft_icon_attachment_id":93432,"_minecraft_imported_at":"2026-06-05T08:15:06+00:00","_minecraft_import_hash":"b54ad12d62ee2aed85808d40549ed7c1","_minecraft_versions":"","_minecraft_links":"","_minecraft_gallery":"","_minecraft_api_metadata":""},"mod_category":[104,157,90],"mod_loader":[106],"minecraft_version":[385],"class_list":["post-93431","mod","type-mod","status-publish","has-post-thumbnail","hentry","mod_category-forge","mod_category-lightweight","mod_category-optimization","mod_loader-forge","minecraft_version-1-12-2"],"yoast_head":"\n
\n_Other useful mods that aren’t essential and the resources\/lists used to make this modpack._<\/sub><\/p>\n
\nPlease see Credits and Copyright.<\/p>\n
\nTLDR: Distribution and modification is allowed, but you can’t use “Levviata’s Optimization Pack” as your own trademark
\n(“Optimum” is NOT trademarked as it is a common English word.)<\/p>\n