VH Accelerator

Spend less time waiting for a large Vault Hunters client to start and become playable.

VH Accelerator is a performance mod for Minecraft 1.18.2 Forge. Its tested client paths reduce launch and multiplayer-login work in large Vault Hunters Third Edition and Remastered packs. Dedicated-server use is intended but has not yet been tested.

The current 1.1.4 release is a maintenance update with no gameplay changes; 1.1.3 added an optional in-game settings screen. Both build on guarded deferred model loading, lower menu memory use, faster warm launches and world joins, and targeted fixes for JEI and model compatibility. It has been exercised with Remastered, Asgard and Wolds Vaults 0.34.1. It also includes the compatibility, startup-reliability, texture-safety and JEI recovery work added since the original 1.0.0 release.

It does not remove recipes, models, or gameplay content. Independent work is prepared in parallel, deterministic results are cached behind strict fingerprints, and completed data is published back to the game on the correct thread. Dynamic models and other unsafe work stay on their normal path.

What it improves

• Client startup, including model, blockstate, texture-atlas, and resource preparation.
• Multiplayer login and server/world transfers, including JEI search and recipe preparation.
• Repeated launches and connections through validated caches.
• Faster repeated JEI recipe preparation without trusting stale category or incomplete recipe-list results.
• Automatic targeted repair when a cached JEI recipe no longer matches the live category or output identity.
• Post-login responsiveness by keeping unfinished background work away from the first playable world frame.
• Testing and troubleshooting through a compact main-menu launch timer and optional login, transfer, post-login, and disconnect measurements.
• Main-menu update notices with occasional clickable CurseForge reminders.
• Critical update notices are shown by default. Players can opt into all update notices through the client config or /vha updates all.
• An immediate opt-out for update checks through the client config or /vha updates off.
• In-world JEI recovery when a synchronized recipe or ingredient is missing only from JEI's visible lists.
• Large-pack model loading through guarded CTM, generated-model, voxel-shape, Vault loot, and optional FerriteCore improvements.
• Deferred baking for eligible plain models and validated warm graph skipping; custom and dynamic models retain their guarded loading path.
• Reduced menu memory from compact JEI indexes and version-gated model caches.

The mod includes targeted compatibility for Vault Hunters, Wolds Vaults, JEI, JEITweaker, CraftTweaker, JER, Powah, Thermal, Iron Furnaces, Industrial Foregoing, Xaero's maps, Sophisticated Storage, Every Compat, and ModernFix. Optional integrations activate only when the matching mod and supported class layout are present.

Improvements since 1.0.0

• Expanded the universal jar to newer official and Remastered Vault versions, both supported JEI generations, and Wolds Vaults 0.32.2, 0.33.0 and 0.34.1.
• Hardened dynamic model and texture handling for Vault gear, Sophisticated Storage placeholders, Vault workstations, Curios, Comforts, and generated Every Compat content.
• Added /vha reload_jei so players can rebuild JEI from the currently synchronized recipes and tags without disconnecting.
• Corrected persistent JEI recipe caching so late recipe batches cannot hide normal crafting-table recipes, while keeping the warm-login speedup.
• Added live category and output checks that repair only affected cached JEI recipes, including transient Sophisticated Storage wood identities.
• Added an off-by-default JEI recipe audit command for troubleshooting cache repairs without enabling all debug profiling.
• Hardened early startup mixins against unusual class-loading order and added build checks that prevent the same startup failure class from returning.
• Reduced repeated CTM, model-registry, voxel-shape, asset-fingerprint, and recipe preparation work in large packs.
• Reduced speculative client data-migration warm-up, accelerated Vault's tiered-loot setup, and added safe learned table sizing when FerriteCore is installed.
• Reduced repeated Forge registry, resource-pack, language, ingredient, world-generation, and allocation work through guarded ModernFix-derived backports.
• Lowered normal-play diagnostic overhead by omitting diagnostic-only mixins when debug mode is disabled at startup.
• Corrected unsafe Target Dummy dispenser registration for the supported 1.18-1.5.2 build without affecting packs where that mod is absent.

Compatibility

• Minecraft: 1.18.2
• Mod loader: Forge 40.3.11 or newer in the Forge 40.x line
• Environment: Client tested; dedicated server intended but not yet tested
• Vault Hunters: Remastered 20.0.3-remastered, .6872, and .6883; official 3.21.5.6882 and 3.21.6.6884; Wolds Vaults 0.32.2 (3.21.5.6573), 0.33.0 and 0.34.1 (3.21.6.6884); custom MVP 3.21.62
• JEI: 9.7.2.1001, 10.2.1.1006, and 10.2.1.1009

The Vault and JEI versions above are tested compatibility baselines, not hard dependencies. One VH Accelerator jar contains guarded support for both JEI generations and all listed Vault layouts.

VH Accelerator is intended for clients and dedicated servers, but dedicated-server behavior has not yet been tested. Clients can use it without installing it on the remote server; test carefully before deploying it to a production server.

Installation

1. Stop Minecraft.
2. Disable or remove older VH Accelerator jars.
3. Disable LaunchFaster, Lightspeed, and VHClientOptimize because their loading changes overlap VH Accelerator.
4. Put VH-Accelerator-1.1.4.jar in the instance's mods folder.
5. Launch once to create the configuration and cold caches.
6. Use later launches and connections when judging warm-cache performance.

ModernFix is optional. If it is installed, VH Accelerator detects overlapping features and selects one owner. Its guarded model pipeline can take ownership of ModernFix dynamic resources when that option is enabled.

Settings screen

With Cloth Config (Forge 6.5.102 or newer) installed, every VH Accelerator setting can be changed in game. Bind Open VH Accelerator settings in Options > Controls; it is unbound by default. Settings are grouped into tabs with a plain-English explanation for each, and a (restart) badge on the ones that need a restart. Cloth Config is optional: without it VH Accelerator works as before and the settings stay in the config files.

Timers and commands

The compact main-menu launch timer remains visible by default. Routine chat timers and detailed debug profiling are disabled by default.

Each setting also accepts status, and /vha compare, /vha timers, /vha debug, /vha jei_audit, or /vha updates reports that setting without changing it.

These are client commands in multiplayer and do not require the mod on the remote server. /vha reload_jei requires an active world or server connection and may pause the client briefly while JEI rebuilds.

First-run expectations

The first launch or first connection after a relevant mod, resource-pack, configuration, registry, recipe, or server change may be slower because VH Accelerator must validate or rebuild affected caches. Invalid cache data is never trusted; the original loading path is used and the cache is replaced.

For a useful comparison, run at least three warm launches or connections and compare the median. Login time also includes network delay and server tick load.

Credits and source

VH Accelerator was independently implemented by HoYin1600p. Early discovery was inspired by LaunchFaster by DogV2 and VHClientOptimize by JustAHuman.

Just Enough Threads, Lightspeed, ModernFix, DashLoader, newer Minecraft model pipelines, BuildScape, Loading Profiler, FerriteCore, ImmediatelyFast, C2ME, Krypton, Fastload, Ksyxis, Forge, Mixin, JEI, and compatibility-target projects also informed research and testing. The complete credits explain each influence.

• Source code and issue tracker
• Full installation guide
• Configuration reference
• License: LGPL-3.0-or-later for post-1.0.13 development. Releases through 1.0.13 retain their originally published MIT terms.

No third-party mod jar is bundled. ModernFix-derived backports retain their required license, copyright, source, and commit references in the public repository. Minecraft is a trademark of Microsoft. Vault Hunters belongs to its respective authors. This independent project is not affiliated with Mojang, Microsoft, Forge, Iskallia, JEI, or the credited projects.

The project icon is original AI-assisted branding and is not an in-game screenshot or a modified official Vault Hunters logo.