
FTB Quests Optimizer
Mod to improve quest performance for servers
About this Mod
A lightweight mod-optimizer for FTB Quests. Removes micro-freezes when moving items and turning in quests, makes inventory checking smarter and quieter for the server - without changing the gameplay and quest rules.
Main features
- Smart inventory detection - heavy scans are launched only when really needed.
- Debounce checks - a series of events are added up to one delayed check (less load spikes).
- Ignore NBT noise - changes like charge/durability do not trigger unnecessary checks.
- Fast resource turn-in - item withdrawal in one pass and one progress update.
- Icon cache (client) - smoother quest book and tips.
Settings (snbt)
- detect.debounce - enable debounce.
- detect.delay_override — override check delay (tick), -1 = like in FTBQ.
- detect.ignore_nbt_only_changes — ignore "same item + quantity".
- consume.aggregate — aggregated resource delivery.
- consume.max_slots_per_pass — limit of scanned slots per pass.
Compatibility
- Does not change gameplay/progress, safe for current worlds.
- Works in singleplayer and on servers.
- Recommended on server (biggest effect). Client is optional for UI cache.
- NeoForge 1.21.1+, requires FTB Quests installed.
Why install?
- Less lag when managing inventory.
- More stable TPS on large bases.
- Smoother quest interface.
Just install the mod — it will do the rest itself.
If you want better performance, install my second mod, both mods will practically eliminate the lag problems associated with achievements and quests.
Feel free to write about all problems and suggestions on my github! Good luck!
Available Versions
How to Install FTB Quests Optimizer on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.1).
Install Mod
Open the mod browser in the dashboard and search for "FTB Quests Optimizer". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.1, 1.20.1, 1.19.2 (+2 more)
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
FTB Quests Optimizer server crashes on startup – what to do?
Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.1). You can switch loaders with one click in the panel.
Is FTB Quests Optimizer compatible with fabric and forge and neoforge?
FTB Quests Optimizer officially supports fabric, forge, neoforge for Minecraft 1.21.1, 1.20.1, 1.19.2. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with FTB Quests Optimizer – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if FTB Quests Optimizer consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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Rent Modded Server
Install FTB Quests Optimizer with just one click on your server.


