ModsFinder

ParityFast

by assemblycsharp

ParityFast targets Minecraft 1.14.4 on Fabric and cuts per-call cost in chosen vanilla routines covering math, randomness and block position logic.

FabricClient and serverMIT License1.14.4

What it does

Its goal is to lower the cost of hot code paths in the game while keeping the results vanilla would produce. Sine and cosine tables, exact helpers including floor, ceil, sqrt, abs, clamp and lerp, angle, color and hash search routines, and certain BlockPos encode, decode and offset functions run through quicker or cached equivalents.

The author describes the mod as aimed at server performance, but the effect depends on the world, its entity count and tick load, the other installed mods, the JVM and the hardware. The author tested a superflat world with roughly 200 active random ticking entities and randomTickSpeed set to 5000, using Carpet tick health, and reports that results vary with workload and settings. ParityFast is client and server, so the server and every player need it. It is published for Fabric only, with a single game version, 1.14.4, and the MIT License, which is not open source.

Key features

  1. Cached math lookups

    Sine and cosine lookups are checked against vanilla table values and kept in cached form to avoid repeated work.

  2. Exact helper methods

    A selected set of helpers, including floor, ceil, sqrt, abs, clamp, lerp and wrapping, is rewritten for lower overhead.

  3. Position and direction helpers

    Selected BlockPos encode and decode paths, offset helpers and direction lookups are optimized.

  4. Vanilla random sequence

    The mod keeps Java Random's 48-bit LCG algorithm rather than switching to another generator, so seeded sequences are preserved.

  5. Cached lookups for ticking

    Enum, list and hash look-ups that entity ticking, chunk ticket handling and block-neighbor tests depend on keep their results in a cache.

Compatibility

Latest build for each game version and loader.

1.14.41.0.3
ReleaseBetaAlphaNot available

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

Questions

Does ParityFast need to be installed on both sides?

Yes. Servers that run it need every player to install it too.

Does ParityFast change world generation or random results?

The author states that random handling keeps vanilla sequence behavior where applicable and that the mod keeps Java Random's algorithm instead of switching to LXM SplitMix. The author also warns that a possible copy of an existing random seed continues the same state.

Will ParityFast speed up every server?

The author says performance impact depends on entity count, tick load, installed mods, the JVM and hardware, so the gain is not fixed. The author's superflat test with roughly 200 random ticking entities used Carpet tick health and reported that results vary.

In the catalog

ParityFast is one of 3,545 Optimization mods on ModsFinder, and one of 2,575 Optimization mods for Fabric. 1,621 mods support Minecraft 1.14.4.

Optimization mods3,545Fabric modsMods for 1.14.41,621

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ImmediatelyFast Backport1.16.5MoreCulling + Noisium Backport1.16.5ScalableLux Backport1.16.5Oozing Potion Backport1.15.2 – 1.18.2Infestation Potion Backport1.15.2 – 1.16.5CTCrafter + Target + Copper Bulb Backport1.14.4

Similar mods

Entity Cullingb1.7.3 – 26.3Dynamic FPS1.14.3 – 26.3Memory Leak Fix1.14.4 – 1.20.4Distant Horizons1.12.2 – 26.3Packet Fixer1.12.2 – 26.3Let Me Despawn1.12.2 – 26.3

What the author says

ParityFast is a lightweight Fabric optimization mod for Minecraft 1.14.4. It optimizes selected vanilla helper paths used by math, random, lookup, and position-related code. The mod is designed to preserve vanilla-compatible behavior while reducing overhead in specific hot paths.
assemblycsharp, on the Modrinth page

Official listing

Owner
assemblycsharp
Published
2026-05-07
Updated on Modrinth
2026-05-07
Facts verified
2026-10-15

Tags

Optimization
Open on ModrinthCompare