ModsFinder

Krypton Reno

by 4x

Krypton Reno is a Forge and NeoForge network optimization mod that Spring Lotus requires and that servers and clients can both run.

ForgeNeoForgeClient or server, optionalGNU Lesser General Public License v3.0 onlyOpen source1.18.2 – 26.2

What it does

Krypton Reno targets the network layer of Minecraft, aiming to reduce latency caused by CPU core preemption on the machine that runs it. Its optimizations can free some hardware resources, although they cannot help much when the hardware is already very limited or the network connection is poor. The mod is open source under the GNU Lesser General Public License v3.0 only, and public links exist for the source code and the issue tracker.

Spring Lotus must be installed alongside Krypton Reno, because it is a required dependency. Builds are published for Forge and NeoForge across the game versions 1.18.2 – 26.2, with 26.1.1-1.20.1 as the latest Forge file for 1.20.1 and 26.3.2-26.2 as the latest NeoForge file for 26.2. Either side can run it on its own, and neither side needs it.

Key features

  1. Network optimization

    Reduces network overhead for both the server and connecting clients, with no change required on the other end of the connection.

  2. Native acceleration on Windows

    A companion native library called RecastLib adds acceleration on Windows x64 and arm64 systems.

  3. Stable version support

    Compatibility is kept for the stable versions 1.20.1 and 1.21.1 as well as the newest releases.

  4. Environment variable configuration

    Some settings can be supplied through environment variables instead of JVM arguments.

Compatibility

Latest build for each game version and loader.

26.x4 of 4 versions with builds
26.2Not available26.3.2-26.2
26.1.2Not available26.3.2-26.1.2
26.1.1Not available26.2.1-26.1
26.1Not available26.2.1-26.1
1.21.x11 of 11 versions with builds
1.21.1126.2.1-1.21.1126.2.1-1.21.11
1.21.1026.1.0-1.21.926.1.0-1.21.9
1.21.926.1.0-1.21.926.1.0-1.21.9
1.21.826.1.0-1.21.626.1.0-1.21.6
1.21.726.1.0-1.21.626.1.0-1.21.6
1.21.626.1.0-1.21.626.1.0-1.21.6
1.21.526.1.0-1.21.426.1.0-1.21.4
1.21.426.1.0-1.21.426.1.0-1.21.4
1.21.20.2.28.1-1.21.10.2.28.1-1.21.1
1.21.10.2.28.1-1.21.10.2.28.1-1.21.1
1.210.2.15-1.20.60.2.15-1.20.6
1.20.x5 of 5 versions with builds
1.19.x3 of 3 versions with builds
1.18.x1 of 1 version with builds
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

Requirements

Dependencies declared by the latest file for each loader.

Required 1

SL
Spring LotusA streamlined library mod created by 404Setup. Includes network libraries, configuration libraries, and some UI libraries.
Required

Use cases

Busy multiplayer servers

Server owners running many players can apply the optimizations on the server side to reduce delays caused by CPU contention.

Players on uneven connections

Clients that join servers running the mod can benefit from the same network changes without needing to match another setup.

Who it’s for: Server administrators and players who run Forge or NeoForge and want to reduce network latency on a machine with spare CPU capacity. Installing Spring Lotus first is required.

Questions

Does Krypton Reno need Spring Lotus?

Yes. Spring Lotus is listed as a required dependency, so it must be installed next to Krypton Reno.

Can a player join a server without Krypton Reno?

The author designed the mod to stay consistent with Krypton Fabric, so a connection can work when the other end lacks it. A server with an anti-cheat mod that checks the mod list may refuse the connection, and the server administrator should be asked for permission.

Which game versions does Krypton Reno support?

Builds cover 1.18.2 – 26.2 across 24 release versions, including 1.20.1 and 1.21.1, which the author keeps compatible.

In the catalog

Krypton Reno is one of 3,545 Optimization mods on ModsFinder, and one of 1,441 Optimization mods for Forge. 13,894 mods support Minecraft 26.2.

Optimization mods3,545Forge modsMods for 26.213,894

More from 4x

All projects
KryptonReno's Fabric Patcher1.21.4 – 26.1.2Yggdrasil Proxy1.18 – 26.3SLSpring Lotus26.1.2 – 26.2Breed Horse1.17 – 26.3

Similar mods

Sodium1.16.3 – 26.3Iris Shaders1.16.5 – 26.3Entity Cullingb1.7.3 – 26.3FerriteCore1.16.5 – 26.3ImmediatelyFast1.18.2 – 26.3Sodium Extra1.16.2 – 26.3

What the author says

Since we no longer provide Forge compatibility starting from version 26.1, the original name "Krypton FNP" is no longer meaningful. The acronym "FNP" stood for "Forge and NeoForge's Port," but as Forge support is now absent, I have renamed this mod to Krypton Reno.
4x, on the Modrinth page

Official listing

Owner
4x
Published
2025-05-19
Updated on Modrinth
2026-07-09
Facts verified
2026-10-15

Tags

OptimizationUtilityManagement
Open on ModrinthCompare