[TaCZ:Accel] | Timeless and Classics Zero Guns: Accelerated

《▓ TaCZ:Accel ▓》

V1.3.0 | Forge 1.20.1 | NeoForge & Fabric 1.21.1

《▒ What It Does ▒》

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

Basically TaCZ, except it stops bullying your PC so much xd.

《▒ V1.3.0 ▒》

• One OmniJar for Forge 1.20.1, NeoForge 1.21.1 and Fabric 1.21.1.
• GPU resident gun geometry, direct skinning and automatic CPU/GPU selection for supported render paths.
• Reusable bone, animation, scope and attachment caches without freezing live animation.
• Cheaper bullet collision checks and fewer temporary hitbox allocations.
• TaCZ Mesh Loader 0.1.8, newer NeoForge builds and TaCZ Refabricated support.

《▒ Rendering & Animation ▒》

Compatible guns can stay GPU resident instead of rebuilding transformed geometry every frame. Only changing bone data needs updating, while the CPU side reuses stable poses, keyframes, attachments and render lookups.

• Direct GPU skinning and compact bone palettes.
• Item frame batching for compatible guns.
• Nonblocking GPU uploads with safe CPU fallback.
• Scope geometry caching while keeping TaCZ stencil behaviour.
• Live Lua animation, visibility and attachment callbacks stay intact.

AUTO is enabled by default. It tests eligible CPU and GPU routes for each model and display context. It is not perfect, but it does not blindly force the GPU just because a gun is big xd.

《▒ Compatibility ▒》

Iris/Oculus shader packs keep their lighting, effects and framebuffer handling. Compatible passes can still use GPU skinning without replacing the pack's whole renderer.

Accelerated Rendering and TaCZ Mesh Loader keep their own renderers too. TaCZ:Accel optimises around them instead of trying to replace everything :L

Arcana underbarrel switching is handled properly as well, with stack specific model selection and live visibility callbacks preserved.

Complementary Reimagined r5.5.1 and Unbound r5.1.1 were tested on Forge. AUTO keeps unlisted shader packs on the native path unless explicitly opted in. The 1.21 ports still need wider shader and gunpack testing.

《▒ Stability Fixes ▒》

• Clears old model, attachment and render cache data after resource reloads and world changes.
• Prevents stale render states from being reused between held guns, item frames and GUI rendering.
• Keeps gun animations and Arcana's stack specific display lookups working through reloads and weapon state changes.
• Bounds GPU uploads and compression work, with normal TaCZ rendering as a fallback when something is not supported.
• Updates the QAPI V2.1 integration and removes the old task builder calls that caused linkage crashes.

《▒ Bullets Still Behave Like TaCZ ▒》

Collision checks are cheaper, not different. Travel time, drop, damage, penetration, headshots and player lag compensation still belong to TaCZ.

The replacement clipping path passed 300,000 randomized comparisons, with another 100,000 checks covering non-player bounds. A fresh collision clipping kernel ran at 18.19 ns normally and 13.92 ns with Accel, about 23.4% less CPU time in that microbenchmark.

《▒ Performance ▒》

Test	Measured Result
M38 SPR, direct skinning vs packed CPU	24.69% less render tick time, 20.22% less render-thread CPU/frame.
512 M4A1 frame guns vs packed CPU	24.497 ms → 12.089 ms render-thread CPU, 50.65% lower.
Reimagined ADS, forced GPU vs CPU compatibility	63.16% less render tick time, 51.01% less render-thread CPU/frame.
Unbound scope cache vs native scope	44.66% less elapsed time per scope call.

Fresh Stock TaCZ Comparison

1080p M38 idle, stock control against default AUTO. These are the middle results from two pairs, not a guaranteed FPS gain.

Metric	Normal	Accel AUTO	Change
Median frame	2.137 ms	1.758 ms	17.8% lower
Median FPS equivalent	468	569	21.6% higher
P95	3.632 ms	3.083 ms	15.1% lower
P99	4.766 ms	4.028 ms	15.5% lower
Render CPU/frame	2.252 ms	1.844 ms	18.1% lower

Forge 1.20.1, RTX 3050 Laptop GPU. The two stock comparison pairs ranged from 5.6% worse to 51.7% better, and AUTO chose different routes. These values are measured central results, NOT a dependable 21.6% boost. The tables above also test different render paths, so do not add their percentages together xd.

Older Forge Benchmarks

These are from the older Forge 1.20.1 tests and the old description. Keeping the numbers here for reference, but they were not rerun or revalidated for this current OmniJar. The old detailed hand, shell and stage figures were removed from the current performance report, so do not treat them as current V1.3.0 measurements.

Older Test	Normal	Accel	Old Result
Average frame time	2.145 ms	1.102 ms	48.6% lower
Equivalent FPS	466	907	94.6% higher
First person gun render	760.73 µs	412.59 µs	45.8% lower
Gun model draw	656.51 µs	362.11 µs	44.8% lower
Gun geometry	83.95 µs	47.00 µs	44.0% lower
Buffer flush	140.38 µs	70.05 µs	50.1% lower
Deferred left hand	123.23 µs	62.06 µs	49.6% lower
Deferred right hand	31.23 µs	18.84 µs	39.7% lower
Shell render	6.10 µs	2.19 µs	64.1% lower
Scalar cube compiler	0.55 µs	0.26 µs	52.7% lower
Bullet non-player hitbox check	8.56 ns	2.10 ns	4.08x faster
Hitbox candidate allocation	232 B	64 B	72.41% smaller

Older Accelerated Rendering Paired Test

With Accelerated Rendering's native GPU mesh path already running, the archived paired test reported 8.1% lower P95 frame time, 9.4% lower P99 frame time and a 63.2% shorter worst frame. Average FPS stayed within roughly 3% of the control. These are older test results, not new OmniJar gains.

《▒ Less RAM Waste ▒》

Detached JSON/Lua source bytes can be kept in compressed 32 KiB pages instead of retaining their full raw size. Files are never rewritten, and live parsed objects do not get compressed underneath TaCZ xd.

• 32 MiB compressed data limit.
• 8 MiB maximum in-flight compression.
• Up to 2,048 retained entries with normal fallback and reload invalidation.

In an older test using 1,184 detached JSON/Lua assets, the raw source bytes went from 30,758,670 B to 3,352,979 B after compression, or 89.1% smaller. That is source byte compression, NOT proof of an 89.1% reduction in the live game's RAM usage. This old test has not been rerun for the current OmniJar.

《▒ Quantified API ▒》

Quantified API handles bounded background work such as detached resource compression. Mutable Minecraft/render state stays on the correct thread because throwing OpenGL calls onto random workers and praying is NOT an optimisation :DDD

《▒ Supported Versions ▒》

• Forge 1.20.1: TaCZ 1.1.8-hotfix
• NeoForge 1.21.1: TaCZ 1.1.8-hotfix-r7
• Fabric 1.21.1: TaCZ Refabricated 0.7.1-forge1.1.8-hotfix2

Requires TaCZ and Quantified API V2.1.0 or newer. Fabric also needs Fabric API and TaCZ Refabricated's normal dependencies. Mesh Loader is optional.

Use the same OmniJar on all three targets. Fabric 1.20.1 isn't included.

《▒ Benchmark It Yourself ▒》

Forge: /tacztbench start runs a 30 second capture. Use /tacztbench gpu auto, off, on, instanced or direct to force routes.

For a stock control, launch with -Dtaczt.optimizations.enabled=false and keep the gun, world, camera and settings matched :]

《▒ License & Support ▒》

BRSSLA | BlackRift Studios

Found a broken model, animation issue or crash? Send the log, loader version, TaCZ build and gunpack name so I can actually reproduce it :]

Admany | BlackRift Studios | 2026