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    2,054,198 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 2026.269,438 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.

    ThreadTweak

    Mod

    Change how the game uses your computer's processor threads.

    C78/ 100
    • OverviewC
    • SecurityPassed
    • PrivacyNone found
    • AINone found
    • CompatibilityUp to 1.21.11
    • ModpacksIn 2,285
    • ReleasesLatest 20 Feb

    Download

    threadtweak-fabric-0.1.8+mc1.21.11.jar

    Released 20 Feb 2026 · 60.1 KB

    Passed: our checks found nothing harmful in this file.

    Download

    Required to run

    • Fabric APIAMinecraft 1.21.11 · Fabric (release 0.141.6)
    OverviewSecurityPrivacyAICompatibilityModpacksReleases

    Why grade C

    How grades work

    Strengths

    • Security checks passed
    • Public source code and issue tracker
    • Widely used

    Points lost

    • No release in 8 months−5 points
    • Many modpacks removed it−5 points
    • Releases in only 3 of the last 24 months−4 points
    All 11 criteria

    • Maintenance

      7 points lost20 / 27
      Last releaseHow long ago the newest file came out, or an existing file was marked as working on a new Minecraft version.8 months ago (20 Feb 2026). 313 modpacks released in the last 6 months still include it, so it keeps 74% of these points. 9 / 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.1.21.11 on Fabric and Quilt. 29% of the 718 popular Fabric mods updated in the last 6 months also have files for 1.21.11. Latest Minecraft: 26.3. 9 / 9
      Regular releasesIn how many of the last 24 months a new file came out. Full points at 8 months.Releases in 3 of the last 24 months 2 / 6

    • Stability

      5 points lost10 / 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.82 of the 336 modpacks with two or more versions removed it in a later one (24%) See the 82 modpacks5 / 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

      Full points10 / 10
      Source codeWhether the project page links to its source code, so anyone can read what it does.GitHub · getchoo/threadtweak 7 / 7
      Place to report problemsWhether the project page links to a place where players can report problems: an issue tracker.GitHub issues · getchoo/threadtweak 3 / 3

    • Popularity

      Full points4 / 4
      DownloadsDownloads on Modrinth and CurseForge. Full points from 5 million.11,179,114 4 / 4

    • Track record

      2 points lost6 / 8
      AgeHow long the project has existed. It counts less when no new file came out recently.3.3 years, 9 releases 6 / 8

    • Security

      Passed
      File checksThis check adds no points. It can only take points away.Our checks found nothing harmful in all 4 latest files for recent Minecraft versions. See Security
    Total78 / 100

    50.2 of the 64 points that apply = 78 out of 100. The points above are rounded to whole numbers.

    About

    ThreadTweak is a maintained fork of Smooth Boot that lets you adjust Minecraft’s CPU thread scheduling, rather than focusing on faster startup. Its configuration lets you change the number of threads used by Minecraft’s worker executors and set priorities for individual threads, including the game, worker, I/O, and integrated-server threads. These settings can help tailor CPU use to a system: for example, lowering worker-thread priorities can leave more processing capacity for other running programs, while adjusting worker thread counts can affect loading and in-game performance.

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

    In-game changes

    Changes the game's code in 2 areas: Game coreChanges 2 game code files in this area: the main loop, lighting and other code the whole game uses. and Server and world logicChanges 2 game code files in this area: the world, commands, scoreboards, saved data and game rules..

    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
    FerriteCoreALithiumAMod MenuASodium ExtraAConcurrent Chunk Management Engine (Fabric)A

    Details

    Creators
    getchoo and devin
    License
    MIT License
    Downloads
    11.2M
    Created
    3 Jul 2023
    Official page
    Modrinth
    Links
    Source code , Issues , Wiki

    Security

    No harmful code found

    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.

    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 · All 7 latest files checked, last on 15 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.
      7 latest files: the newest file for each Minecraft version and loader. The answer above is about the 4 for recent versions. 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.
    • Looked for, not foundWe looked for these in the file and did not find them.
      The internet, other programs, updating itself, the webcam or microphone, an AI service.

    Privacy

    We found nothing it sends

    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 · All 4 files 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 all 4 files, for recent Minecraft versions. 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 that AI was used to make it

    We looked for AI tools in its texts, files, images and code history and found none.

    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 · 6 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.
      Nothing found
    • 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
      9 changelogs read
    • 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
      1 image read
    • 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
      12 code files read

    Compatibility

    See all 9 files
    Fabric
    Quilt
    1.201.2126.126.3

    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 the server. Players can join without it.
    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.
    Fabric APIA
    OptionalProjects it can work with but does not need. The author lists them.
    Mod Menuin some filesA
    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.It has no file for Minecraft versions newer than 1.21.11. Many recently updated mods still support 1.21.11.

    Modpacks using this project

    Find modpacks with it
    Modpacks that released a new version with this project, each month
    3001500
    Oct 2024: 193 modpacksNov 2024: 180 modpacksDec 2024: 176 modpacksJan 2025: 191 modpacksFeb 2025: 152 modpacksMar 2025: 171 modpacksApr 2025: 173 modpacksMay 2025: 201 modpacksJun 2025: 178 modpacksJul 2025: 179 modpacksAug 2025: 184 modpacksSep 2025: 168 modpacksOct 2025: 138 modpacksNov 2025: 96 modpacksDec 2025: 104 modpacksJan 2026: 88 modpacksFeb 2026: 78 modpacksMar 2026: 112 modpacksApr 2026: 101 modpacksMay 2026: 77 modpacksJun 2026: 86 modpacksJul 2026: 70 modpacksAug 2026: 56 modpacksSep 2026: 56 modpacks
    Oct 2024Oct 2025Sep 2026
    Modpacks that released a new version with this project, each month
    Oct 2024193
    Nov 2024180
    Dec 2024176
    Jan 2025191
    Feb 2025152
    Mar 2025171
    Apr 2025173
    May 2025201
    Jun 2025178
    Jul 2025179
    Aug 2025184
    Sep 2025168
    Oct 2025138
    Nov 202596
    Dec 2025104
    Jan 202688
    Feb 202678
    Mar 2026112
    Apr 2026101
    May 202677
    Jun 202686
    Jul 202670
    Aug 202656
    Sep 202656

    Fewer modpacks put it in their new versions than a year ago: 74 a month now, 181 a year agoThe average of the last 6 months, compared with the same 6 months a year before. We say it only when the change is large..

    2,285 modpacks include ThreadTweak in at least one of their versions. Here are the 30 most downloaded.

    ModpackDownloadsLast version with it
    Vanilla Perfected3M downloadslast version with it 18 Oct 2024SkyBlock Enhanced2.1M downloadslast version with it 8 Jan 2026Fresh & Smooth1.9M downloadslast version with it 3 Jul 2025Remarkably Optimized1.5M downloadslast version with it 13 Nov 2025ArdaCraft1.1M downloadslast version with it 25 Aug 2026Backrooms: Found Footage914K downloadslast version with it 11 Sep 2026Keo Optimized852K downloadslast version with it 16 Feb 2026Better OneBlock [One Block]783K downloadslast version with it 12 Apr 2026Breakneck: Optimized751K downloadslast version with it 14 Mar 2026OptiFine for Fabric744K downloadslast version with it 29 Mar 2025
    1 to 10 of 30123

    Often in the same modpacks

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

    ProjectTypeShareGrade
    FerriteCoreAModin 99% of the modpacks with ThreadTweakLithiumAModin 97% of the modpacks with ThreadTweakMod MenuAModin 94% of the modpacks with ThreadTweakSodium ExtraAModin 84% of the modpacks with ThreadTweakConcurrent Chunk Management Engine (Fabric)AModin 80% of the modpacks with ThreadTweakReese's Sodium OptionsAModin 78% of the modpacks with ThreadTweakBadOptimizationsAModin 77% of the modpacks with ThreadTweakDynamic FPSAModin 76% of the modpacks with ThreadTweakKryptonAModin 69% of the modpacks with ThreadTweakEnhanced Block EntitiesCModin 68% of the modpacks with ThreadTweak
    1 to 10 of 30123

    Latest files

    The newest file for each Minecraft version and loader. The files for recent versions come first. Recent versions: those released in the last 2 years, plus 1.20.1 and 1.21.1, among the most played in modpacks.

    MinecraftLoaderVersionSecuritySendsRequires
    1.21.9 to 1.21.11·Fabric, Quilt0.1.80.1.8 · threadtweak-fabric-0.1.8+mc1.21.11.jarSends: None foundRequires:Fabric APIPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.3 to 1.21.8·Fabric, Quilt0.1.70.1.7 · threadtweak-fabric-0.1.7+mc1.21.5.jarSends: None foundRequires:Fabric APIPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.1·Fabric, Quilt0.1.50.1.5 · threadtweak-fabric-0.1.5+mc1.21.1.jarSends: None foundRequires:Fabric APIPassedOur checks found nothing harmful in this file. Its code was read too.
    1.20 to 1.20.2·Fabric, Quilt0.1.10.1.1 · threadtweak-fabric-1.20.2-0.1.1.jarSends: None foundRequires:Fabric APIPassedOur checks found nothing harmful in this file. Its code was read too.
    Older Minecraft versions
    1.21·Fabric, Quilt0.1.40.1.4 · threadtweak-fabric-0.1.4+mc1.21.jarSends: None foundRequires:Fabric APIPassedOur checks found nothing harmful in this file. Its code was read too.
    1.20.5 to 1.20.6·Fabric, Quilt0.1.30.1.3 · threadtweak-fabric-1.20.6-0.1.3.jarSends: None foundRequires:Fabric APIPassedOur checks found nothing harmful in this file. Its code was read too.
    1.20.4·Fabric, Quilt0.1.20.1.2 · threadtweak-fabric-1.20.4-0.1.2.jarSends: None foundRequires:Fabric APIPassedOur checks found nothing harmful in this file. Its code was read too.

    9 releases

    MinecraftLoaderVersionReleasedSecurityGet it onDownload
    1.21.9 to 1.21.111.21.9 to 1.21.11The latest file for its Minecraft version and loader·Fabric, Quilt0.1.80.1.8 · threadtweak-fabric-0.1.8+mc1.21.11.jar (main file, 1 other file in this version not shown)·20 Feb 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthDownload · Stable · 60.1 KB
    1.21.3 to 1.21.81.21.3 to 1.21.8The latest file for its Minecraft version and loader·Fabric, Quilt0.1.70.1.7 · threadtweak-fabric-0.1.7+mc1.21.5.jar (main file, 1 other file in this version not shown)·12 Apr 2025PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthDownload · Stable · 141.0 KB
    1.21.3·Fabric, Quilt0.1.60.1.6 · threadtweak-fabric-0.1.5+mc1.21.3.jar (main file, 1 other file in this version not shown)·23 Nov 2024PassedOur checks found nothing harmful in this file.Open this file on ModrinthDownload · Stable · 141.0 KB
    1.21.1The latest file for its Minecraft version and loader·Fabric, Quilt0.1.50.1.5 · threadtweak-fabric-0.1.5+mc1.21.1.jar (main file, 1 other file in this version not shown)·23 Aug 2024PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthDownload · Stable · 140.9 KB
    1.21The latest file for its Minecraft version and loader·Fabric, Quilt0.1.40.1.4 · threadtweak-fabric-0.1.4+mc1.21.jar (main file, 1 other file in this version not shown)·31 Jul 2024PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthDownload · Stable · 140.9 KB
    1.20.5 to 1.20.61.20.5 to 1.20.6The latest file for its Minecraft version and loader·Fabric, Quilt0.1.30.1.3 · threadtweak-fabric-1.20.6-0.1.3.jar (main file)·15 May 2024PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthDownload · Stable · 140.9 KB
    1.20.4The latest file for its Minecraft version and loader·Fabric, Quilt0.1.20.1.2 · threadtweak-fabric-1.20.4-0.1.2.jar (main file)·12 Dec 2023PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthDownload · Stable · 140.8 KB
    1.20 to 1.20.21.20 to 1.20.2The latest file for its Minecraft version and loader·Fabric, Quilt0.1.10.1.1 · threadtweak-fabric-1.20.2-0.1.1.jar (main file)·27 Sep 2023PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthDownload · Stable · 141.5 KB
    1.20 to 1.20.21.20 to 1.20.2·Fabric, Quilt0.1.00.1.0 · threadtweak-fabric-1.20.1-0.1.0.jar (main file)·3 Jul 2023PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthDownload · Stable · 141.3 KB