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    2,055,424 files checkedFiles from Modrinth and CurseForge we downloaded and checked. Counted on 25 Oct 2026.636,163 files with their code readFiles whose code we turned back into readable code and read, in an isolated environment. Counted on 25 Oct 2026.269,392 projects gradedProjects with a letter from A to F. Counted on 25 Oct 2026.
    How it worksMalware we foundAPIAboutPrivacyTermsContact

    © 2026 ModgradeNot an official Minecraft product. Not approved by or associated with Mojang or Microsoft.

    Experimental Performance

    Mod

    Improves Minecraft performance in several aspects.

    E33/ 100
    • OverviewE
    • SecurityPassed
    • PrivacyNone found
    • AINone found
    • CompatibilityMinecraft 1.20.4
    • ModpacksIn 20
    • ReleasesLatest Dec 2023

    Download

    experimentalPerformance-0.1.1.jar Beta

    Released 28 Dec 2023 · 666.5 KB

    Passed: our checks found nothing harmful in this file.

    Download
    OverviewSecurityPrivacyAICompatibilityModpacksReleases

    Why grade E

    How grades work

    Strengths

    • Security checks passed

    Points lost

    • No release in 2.8 years−18 points
    • No file for a Minecraft version most modpacks use−9 points
    • Only one release−8 points
    • Many modpacks removed it−4 points
    • No public issue tracker−3 points
    • Under 5 million downloads−1 point
    All 11 criteria

    • Maintenance

      27 points lost0 / 27
      Last releaseHow long ago the newest file came out, or an existing file was marked as working on a new Minecraft version.2.8 years ago (28 Dec 2023) 0 / 12
      Supports popular versionsWhether the project has a file for a Minecraft version that 15% or more of the popular mods updated in the last 6 months also support. A version many modpacks use, like 1.20.1 or 1.21.1, also counts after a release in the last 12 months.1.20.4 on Fabric. About 2.8 years behind popular modding versions. Latest Minecraft: 26.3. Abandoned: no release for 2.8 years; no file for a popular modding version.0 / 9
      Regular releasesIn how many of the last 24 months a new file came out. Full points at 8 months.No release in the last 24 months 0 / 6

    • Stability

      4 points lost11 / 15
      Removed from modpacksHow many modpacks removed it in a later version of the pack. We can only see this in modpacks with two or more versions. A pack that swaps it for another edition of the same project, or that is rebuilt from scratch, does not count.3 of the 15 modpacks with two or more versions removed it in a later one (20%) See the 3 modpacks6 / 10
      Quick fixesHow often a release needed a quick fix: a new release within 3 days to fix a problem in it.Not measured yet.
      Known conflictsHow many projects say they do not work with it, compared with how widely it is used. Packs, small projects, forks, ports, add-ons, alternatives and old versions do not count.None 5 / 5

    • Transparency

      3 points lost7 / 10
      Source codeWhether the project page links to its source code, so anyone can read what it does.GitHub · PedrixzZ/ExperimentalPerformanceUnofficial 7 / 7
      Place to report problemsWhether the project page links to a place where players can report problems: an issue tracker.No link to report problems 0 / 3

    • Popularity

      1 point lost3 / 4
      DownloadsDownloads on Modrinth and CurseForge. Full points from 5 million.27,687 3 / 4

    • Track record

      8 points lost0 / 8
      AgeHow long the project has existed. It counts less when no new file came out recently.2.8 years, 1 release 0 / 8

    • Security

      Passed
      File checksThis check adds no points. It can only take points away.Our checks found nothing harmful in the latest file. See Security
    Total33 / 100

    21.4 of the 64 points that apply = 33 out of 100. The points above are rounded to whole numbers.

    About

    Experimental Performance is a proof-of-concept mod that aims to speed up Minecraft by reducing the memory footprint of frequently used game classes so they fit more efficiently in processor cache lines. It reshapes chunk data to reduce chunk size from 80 to 64 bytes, moves block data into a separate BlockInfo class, and reduces entities from five cache lines to four. These changes are intended to make chunk operations and block handling faster, though the mod may use extra calls and memory allocation as part of its optimizations. The mod is highly experimental and largely untested, so it is best understood as a performance experiment rather than a compatibility-tested addition for modpacks.

    Written from Modrinth and the GitHub README . How we write it

    In-game changes

    It has no file for a recent Minecraft version. This is about its files for Minecraft 1.20.4.

    Does not change the game's code directly.

    Adds no new blocks, items or other content.

    Keeps all of vanilla Minecraft's textures, models and sounds.

    Often used with it

    See all 30
    Mod MenuAConcurrent Chunk Management Engine (Fabric)AFerriteCoreALithiumAThreadTweakC

    Details

    Creators
    PedrixzZ and FX
    License
    Apache License 2.0
    Downloads
    28K
    Created
    28 Dec 2023
    Official page
    Modrinth
    Links
    Source code

    Security

    No harmful code found

    It has no file for a recent Minecraft version. This is about its files for Minecraft 1.20.4.

    We checked its files and read their code, without running it.

    What it can do on your computer

    Uses folders outside the game
    It can read or write files outside your Minecraft folder, on the rest of your computer. Found: your user folder.
    Starts other programs
    It can start another program on your computer, for example to open a link in your browser. Found in jol-core, a library it includes.
    Connects to the internet
    It has code that can go online, for example to check for updates, load skins or send crash reports. Found in the mod's own code, in classgraph, a library it includes and in jol-core, a library it includes. See Privacy
    Creates settings files
    The mod keeps its settings in the config folder of your game, where you can change or delete them. 1 file in your config folder.

    Why we show this: a mod runs on your computer like any program, so harmful code in it can take your accounts or files. Our checks look for known signs of harm. They cannot prove that a file is harmless. In the grade: malware means no grade, and a Warning in a latest file for a recent Minecraft version lowers it.

    How we checked · The latest file checked, last on 16 Oct 2026
    • FilesWe download the files from Modrinth or CurseForge and look at what is inside them and what their code can do, without running them. Fixed rules tell what is harmful.
      1 latest file. It is not for a recent Minecraft version, so the answer above is about it. Recent versions: those released in the last 2 years, plus 1.20.1 and 1.21.1, among the most played in modpacks. See each file in Releases
    • Their codeWe turn the code of the files back into readable code and follow what it does, without running it. This shows what it downloads, what it sends and where your login goes.
      Read without running it
    • Author on ModrinthThe disclosure form on Modrinth, where the author declares that the project reads or edits things on your system outside the game. Since 13 Aug 2026, Modrinth's rules require it when this applies.
      Nothing declared about your system outside the game.
    • Starts other programs
      Purpose not known.
    • Looked for, not foundWe looked for these in the file and did not find them.
      Updating itself, the webcam or microphone, an AI service.

    Privacy

    We found nothing it sends

    It has no file for a recent Minecraft version. This is about its files for Minecraft 1.20.4.

    We read its code without running it: it contacts no web address while you play.

    Why we show this: a mod can send things about you over the internet, like your player name or your login. Contacting an address to check for updates or download files sends nothing about you. Not in the grade: sending data can be normal for what a mod does.

    How we checked · Its one file read
    • Files readWe read the code without running it. We list each web address the code contacts while you play, and what it sends. Code that is never used is left out.
      The code of its one file, for Minecraft 1.20.4. See each file in Releases
    • Author on ModrinthThe disclosure form on Modrinth, where the author declares crash reports, usage data and advertisements. Since 13 Aug 2026, Modrinth's rules require it when a project collects data on its users or shows advertisements.
      Nothing declared about crash reports, usage data or advertisements.

    AI

    No sign so far that AI was used to make it

    We looked for AI tools in its description, files and images and found none.

    We have not read its changelogs and code history yet.

    No sign of AI in the game

    We found no AI service, AI library or AI model file in its code.

    Why we show this: some players and servers avoid projects made with AI, and AI in the game can send what you write to an online service. Not in the grade: using AI does not tell whether a project works well or is kept up to date.

    How we checked · 5 places read
    • Author on ModrinthThe disclosure form on Modrinth. Since 13 Aug 2026, Modrinth's rules require it when a substantial part of the code is AI output, when an asset is mainly AI output, or when the project or its page relies on generative AI.
      No AI content or AI features declared.
    • Code historyThe public code on GitHub: who made each change, credit lines such as "Co-authored-by", and its files.
      Not read yet
    • Description and changelogsThe description, project page and newest changelogs: sentences saying an AI tool was used, and text pasted from an AI chat.
      Nothing found in the description
      Changelogs not read yet
    • Its filesFiles that AI coding tools leave behind (like AGENTS.md), and the texts inside the files you download.
      Nothing found
    • Images in its filesHidden data in the images of the files you download, where AI image tools write their name and settings.
      Nothing found
    • Code of the modThe code and files of the mod, read without running it: addresses of AI services, AI libraries, AI model files and a place for your own AI key.
      No AI service, AI library or AI model file
      234 code files read

    Compatibility

    See the file in Releases
    Fabric
    1.2026.126.3

    Point at or tap a version to see its loaders.

    Runs onWhere to install it: in your game, on the server, or both. As the author says on Modrinth.Works in your game or on a server. With both, you get extra features.
    RequiresProjects you must also install for it to work. From the author's lists for its files for recent Minecraft versions, or from its project page.Nothing
    OptionalProjects it can work with but does not need. The author lists them.Nothing
    IncludesProjects packed inside its files.Nothing
    Speed of updatesHow fast it gets a file for new Minecraft versions, on average, compared with similar projects. Not part of the grade.No file yet for any of the last 6 Minecraft versions.

    Modpacks using this project

    Find modpacks with it

    Modpacks that include Experimental Performance in at least one of their versions, most downloaded first.

    ModpackDownloadsLast version with it
    Gensokyo Reimagined QOL141K downloadslast version with it 12 Jun 2024Vulkan3215K downloadslast version with it 16 Jul 2024Monumenta Cakedition11K downloadslast version with it 19 Jul 2025Stellar Client9.1K downloadslast version with it 31 May 2024SimplyVanilla7.3K downloadslast version with it 19 Feb 2024Valkaw6.5K downloadslast version with it 13 Jan 2024Neodymium5.7K downloadslast version with it 6 Apr 2024PlasPak5.3K downloadslast version with it 22 Jul 2024Starlev's Optimized | Hypixel Skyblock4.3K downloadslast version with it 2 Sep 2024Quartz's Console: Rewritten4K downloadslast version with it 20 Mar 2024
    1 to 10 of 2012

    Often in the same modpacks

    Mods that modpacks often add together with Experimental Performance. Share: how many of the modpacks with Experimental Performance also have that mod.

    ProjectTypeShareGrade
    Mod MenuAModin 100% of the modpacks with Experimental PerformanceConcurrent Chunk Management Engine (Fabric)AModin 95% of the modpacks with Experimental PerformanceFerriteCoreAModin 95% of the modpacks with Experimental PerformanceLithiumAModin 95% of the modpacks with Experimental PerformanceThreadTweakCModin 90% of the modpacks with Experimental PerformanceLanguage ReloadAModin 90% of the modpacks with Experimental PerformanceReese's Sodium OptionsAModin 90% of the modpacks with Experimental PerformanceVery Many Players (Fabric)AModin 85% of the modpacks with Experimental PerformanceLazyDFU-Modin 85% of the modpacks with Experimental PerformanceDebugifyAModin 85% of the modpacks with Experimental Performance
    1 to 10 of 30123

    Latest files

    The newest file for each Minecraft version and loader. None is for a recent Minecraft version. Recent versions: those released in the last 2 years, plus 1.20.1 and 1.21.1, among the most played in modpacks.

    MinecraftLoaderVersionSecuritySendsRequires
    Older Minecraft versions
    1.20.4·Fabric0.1.10.1.1 · experimentalPerformance-0.1.1.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.

    1 release

    MinecraftLoaderVersionReleasedSecurityGet it onDownload
    1.20.4The latest file for its Minecraft version and loader·Fabric0.1.10.1.1 · experimentalPerformance-0.1.1.jar (first file)Beta·28 Dec 2023PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthDownload · Beta · 666.5 KB