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[TaCZ:Accel] Timeless and Classics Zero Guns: Tweaks

by BlackRift Studios

[TaCZ:Accel] Timeless and Classics Zero Guns: Tweaks is a client and server performance addon for the TaCZ gun mod, reducing CPU and RAM work for gun rendering and bullet handling.

FabricForgeNeoForgeClient and serverCustom license1.20.1 – 1.21.1

What it does

The addon targets the rendering and bullet hot paths of TaCZ. GPU resident gun geometry, direct skinning and reusable bone animation caches cut repeated transform work each frame, and cheaper bullet collision checks allocate fewer temporary hitboxes. Automatic CPU or GPU selection tests eligible routes per model, display context and supported render path, and gunpack asset RAM is reduced through Quantified API, which is required alongside the base TaCZ mod.

Gun behaviour, animations and bullet results are meant to stay the same as in TaCZ. Lighting effects and framebuffer handling in Iris and Oculus shader packs stay intact, and the own renderers of Accelerated Rendering and TaCZ Mesh Loader are left running. The addon is published for Fabric, Forge and NeoForge, with the 1.3.2 build for 1.21.1 released on 2026-10-13. It is released under a custom license and is not open source.

Key features

  1. GPU resident gun geometry

    Compatible guns keep their transformed geometry on the GPU instead of rebuilding it every frame.

  2. Automatic CPU and GPU routing

    Each model, display context and render path is tested for eligibility, and the addon picks the GPU route only when it is supported.

  3. Cheaper bullet collision

    Collision checks run with fewer temporary hitbox allocations, reducing per-bullet overhead.

  4. Nonblocking GPU uploads

    Uploads run without blocking the frame, with a safe CPU fallback when a path cannot use the GPU.

  5. Arcana underbarrel switching

    Underbarrel attachment switching keeps working, with stack specific model selection applied live and visibility callbacks preserved.

Compatibility

Latest build for each game version and loader.

1.21.11.3.21.3.21.3.2
1.20.61.3.21.3.21.3.2
1.20.51.3.21.3.21.3.2
1.20.41.3.21.3.21.3.2
1.20.31.3.21.3.21.3.2
1.20.21.3.21.3.21.3.2
1.20.11.3.21.3.21.3.2
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 2

Quantified APIA high-performance API for Minecraft mods, built to handle tasks efficiently, reduce lag, use GPU acceleration, smart caching, and multithreading - keeping your game smooth and stable.
Required
[TaCZ] Timeless and Classics ZeroThe most Immersive and Customizable modern FPS experience in Minecraft - A complete Remaster of the TaC gun mod by the original team.
Required

Optional 2

TaCZ: RefabricatedAn unofficial Fabric port of Timeless and Classics Zero. The most Immersive and Customizable modern FPS experience in Minecraft
Optional
[UNOFFICIAL] TaCZ 1.21.1 NeoForge PortUnofficial port of Timeless and Classics Zero, a Minecraft gun mod, to 1.21.1 NeoForge
Optional

How it compares

Full comparison

TaCZ Enchantments Overhaul is a Forge mod for 1.20.1, open source under the MIT License and client and server in environment. [TaCZ] Tacz Bullet Improvement is also a Forge mod, covering 1.20 – 1.20.1 under All rights reserved, and it is not open source. This addon instead covers Fabric, Forge and NeoForge across the 1.20.1 – 1.21.1 builds.

ModLoadersGame versionsEnvironmentUpdated
[TaCZ:Accel] Timeless and Classics Zero Guns: TweaksFabric, Forge and NeoForge1.20.1 – 1.21.1Client and server2026-10-13
TaCZ Enchantments OverhaulForge1.20.1Client and server2026-06-23
[TaCZ] Tacz Bullet ImprovementForge1.20 – 1.20.1Client and server2026-09-05

Questions

Does TaCZ Refabricated work with this addon?

TaCZ Refabricated is an optional dependency. The addon lists it as supported, and it is not required to run the addon alongside the base TaCZ mod.

Does this addon need to be installed on the server?

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

Which dependencies are required?

Quantified API and [TaCZ] Timeless and Classics Zero must be installed alongside this addon.

More from BlackRift Studios

All projects
Quantified API1.18.2 – 26.2LC²H [Lost Cities: Multithreaded]1.20.1 – 1.20.6Immersive Weathering: Tweaks1.20.1 – 1.20.6

What the author says

TaCZ:Accel is a performance addon for TaCZ. It cuts down repeated rendering, animation, attachment, bullet and resource work that really does not need to happen every frame. Same guns, same animations, same bullet behaviour. Just less CPU and RAM abuse, especially with bigger gunpacks:DDD
BlackRift Studios, on the Modrinth page

Official listing

Owner
BlackRift Studios
Published
2026-08-04
Updated on Modrinth
2026-10-13
Facts verified
2026-10-15
Open on ModrinthCompare