mod
LightSpeedRe - Launch optimizationsMinecraft mod for 1.21.1
Reduces your waiting time by loading modpacks significantly faster (currently 48% - 71%)
- Latest version
- lightspeed-1.21.1-1.2.1.jar
- Minecraft
- 1.20.1 to 1.21.1
- Java
- Java 21+
- Loaders
- NeoForge, Forge
- Licence
- not stated
- Downloads
- 2.9M
- Updated
- 27 d ago
- Available on
- CurseForge
Minecraft versions
Every version LightSpeedRe - Launch optimizations declares support for, newest first, with the Java runtime that version needs.
Download
From LightSpeedRe - Launch optimizations’s own host. Nothing is re-hosted here.
lightspeed-1.21.1-1.2.1.jar · 0.1 MB · for 1.21.1
add1907dbee2…Older versions12Hide older versions
- lightspeed-1.21.1-1.2.0hotfix4.jar12 Jul 20261.21.10.1 MB144 downloads
255b24e946e3…Get - lightspeed-1.21.1-1.2.0hotfix3.jar3 Jul 20261.21.10.1 MB92 downloads
92e13563f773…Get - lightspeed-1.21.1-1.2.0hotfix2.jar2 Jul 20261.21.10.1 MB196 downloads
211a8d3aece0…Get - lightspeed-1.20.1-1.2.0hotfix2.jar2 Jul 20261.20.10.1 MB1 downloads
7d54deef01ed…Get - lightspeed-1.20.1-1.2.0hotfix.jar1 Jul 20261.20.10.1 MB166 downloads
6f7703291af4…Get - lightspeed-1.21.1-1.2.0hotfix.jar1 Jul 20261.21.10.1 MB1 downloads
dc5bef3b2fa7…Get - lightspeed-1.21.1-1.2.0.jar1 Jul 20261.21.10.1 MB31 downloads
2f498fb2cce9…Get - lightspeed-1.20.1-1.2.0.jar1 Jul 20261.20.10.1 MB3 downloads
c2941f4d4e43…Get - lightspeed-1.20.1-1.1.2hotfix.jar29 Nov 20251.20.10.0 MB499 downloads
9d9ac4e588d2…Get - lightspeed-1.20.1-1.1.2.jar29 Nov 20251.20.10.0 MB121 downloads
a2ccd4732239…Get - lightspeed-1.20.1-1.1.1.jar28 Nov 20251.20.10.0 MB574 downloads
54fffc07b4d8…Get - lightspeed-1.20.1-1.1.0.jar21 Nov 20251.20.10.0 MB213 downloads
76e614897439…Get
Frequently asked
Does LightSpeedRe - Launch optimizations work on Minecraft 1.21.1?
Yes. 1.21.1 is the newest Minecraft version LightSpeedRe - Launch optimizations 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 LightSpeedRe - Launch optimizations support?
Everything the author has declared, from 1.20.1 up to 1.21.1. The full list is in the table above, with the Java runtime each version needs next to it.
Which platform or loader does LightSpeedRe - Launch optimizations support?
NeoForge, Forge. A build for one platform or loader will not necessarily load on another, so this is the first thing to check before the Minecraft version.
Which Java version do I need for LightSpeedRe - Launch optimizations?
On the newest Minecraft version it supports, Java 21 or newer. The requirement comes from the Minecraft version you run rather than from the mod itself, so on an older supported Minecraft the answer is that version's Java, not this one.
How do I install LightSpeedRe - Launch optimizations?
Install the matching loader first, then put the downloaded file in your mods folder and start the game. The loader, the mod 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 LightSpeedRe - Launch optimizations safely?
Start with the author's page on CurseForge, which is where the data here is synced from. MCReference does not host or repackage files. The download link goes to the source recorded for that release; verify the publisher, filename and checksum before running it.
Works on the same versions
Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.
Is this information wrong or missing something? .