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modpack

-Slightly- boosted PerformanceMinecraft modpack for 1.21.11

It slightly boosts the performance of the Minecraft game, adding seasons and QoL features.

client and servernewest supported 1.21.11OptimizationLightweight
Latest version
211.5-8
Minecraft
1.16.5 to 1.21.11
Java
Java 21+
Loader
Fabric
Licence
MIT
Downloads
6.2k
Updated
6 mo ago
Available on
Modrinth
Space NodePartner

Host -Slightly- boosted Performance servers

One click and -Slightly- boosted Performance is installed with the right loader, on hardware built for it.

  • 1.21.11
  • Fabric
  • One click modpack install
  • Dependencies handled
  • Tuned startup flags
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

Minecraft versions

Every version -Slightly- boosted Performance declares support for, newest first, with the Java runtime that version needs.

Other modpacks
MinecraftThroughJavaEvidenceReleased
1.21.11Fabric21+declared9 Dec 2025
1.20.4Fabric17+declared7 Dec 2023
1.19.4Fabric17+declared14 Mar 2023
1.18.2Fabric17+declared28 Feb 2022
1.16.5Fabric8+declared14 Jan 2021

Download

From -Slightly- boosted Performance’s own host. Nothing is re-hosted here.

211.5-8release31 Jan 2026

v211.5-8 MC 1.21.11 Fabric.mrpack · 0.0 MB · for 1.21.11

Download latest
f782eca3eb00…
Older versions16
  • 211.5-024 Jan 20261.21.110.0 MB18 downloadsb4c05e1b8b0a…Get
  • 211.4-1116 Jan 20261.21.110.0 MB57 downloadsc6bde93a513b…Get
  • 211.4-69 Jan 20261.21.110.0 MB20 downloads93f6289fe129…Get
  • 211.4-04 Jan 20261.21.110.0 MB19 downloads2f2d10819d20…Get
  • 211.3-03 Jan 20261.21.110.0 MB15 downloadsb0fac9e7d28b…Get
  • 211.2-61 Jan 20261.21.110.0 MB13 downloads0821e37def6d…Get
  • 211.2-029 Dec 20251.21.110.0 MB17 downloads90a833934ea9…Get
  • 211.1-026 Dec 20251.21.110.0 MB19 downloads0caa60f02ed0…Get
  • 211.0-023 Dec 20251.21.110.0 MB16 downloads9ad2b622ec93…Get
  • 211.0-b321 Dec 20251.21.110.0 MB29 downloads0b99f907e937…Get
  • 211.0-b220 Dec 20251.21.110.0 MB19 downloads1333a872eb72…Get
  • 211.0-b120 Dec 20251.21.110.0 MB17 downloadsa012971cce88…Get
  • 204.0-2820 Dec 20251.20.40.0 MB36 downloads56dbc662a47e…Get
  • 194.6-5020 Dec 20251.19.40.0 MB23 downloadsa384189053a1…Get
  • 182.8-4920 Dec 20251.18.20.0 MB26 downloads74143c9db24b…Get
  • 165.0-2120 Dec 20251.16.50.0 MB97 downloads78623465323d…Get

Frequently asked

Does -Slightly- boosted Performance work on Minecraft 1.21.11?

Yes. 1.21.11 is the newest Minecraft version -Slightly- boosted Performance declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.

Which Minecraft versions does -Slightly- boosted Performance support?

Everything the author has declared, from 1.16.5 up to 1.21.11. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install -Slightly- boosted Performance on the client or the server?

Both. Every player needs it installed and so does the server, so anyone joining without it will be refused.

Which loader does -Slightly- boosted Performance need?

Fabric. A build for one loader will not load on another, so this is the first thing to check before the Minecraft version.

Which Java version do I need for -Slightly- boosted Performance?

Java 21 or newer, because that is what the newest Minecraft release it supports requires. The requirement comes from the game rather than from the modpack itself.

What licence is -Slightly- boosted Performance under?

MIT, as stated by the author on the platform we synced it from. Check the project's own page before redistributing or bundling it.

How do I install -Slightly- boosted Performance?

Install the matching loader first, then put the downloaded file in your mods folder and start the game. The loader, the modpack and Minecraft all have to be on the same version, which is the usual reason a mod does not appear in game.

Where do I download -Slightly- boosted Performance safely?

From the author's own page on Modrinth, which is where the data here is synced from. MCReference never mirrors, re-hosts or repackages a file: every download button points at the original source, so you get exactly what the author published.

Works on the same versions

Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.

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Last checked 6 d ago against Modrinth. We do not host files and we do not republish descriptions; every download link points at the author’s own release.

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