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About this mod
CK3 Performance Mod
Optimizes AI, reduces event spam, and improves FPS by streamlining scripts, pruning low-impact characters, and disabling unnecessary graphics.
Designed to make late-game smoother — especially on mid or low-end PCs.
Compatible with Ironman
- Permissions and credits
Crusader Kings 3 Performance Mod (Full Optimization Suite)
Clausewitz scripting mastery meets real-world benchmarks. Built for speed. Tuned for stability. Proven in war.
📌 Overview
This mod boosts the performance of Crusader Kings 3 by streamlining CPU and memory usage, stabilizing AI behaviors, optimizing character loads, and reworking late-game economy and warfare logic.
More than a graphics tweak — it is a full-engine optimization system built with modding discipline.
🚀 Key Features
- 🧹 Character Culling: Smart background pruning of low-value characters for faster ticks and lower memory usage.
- 🧠 AI Behavior Optimization: Smarter claim fabrication, construction decisions, economic management, and marriage alliances.
- 🛠️ Dynamic AI Army Compositions: Siege-heavy focus during wartime improves AI siege behavior.
- 🎯 Auto Marriage System: AI marriages streamlined for realm stability, not spam.
- ⚙️ Performance Traits: Performance Mode, Extreme Mode, Hidden Optimization Traits, and AI Efficiency Modes fully integrated.
- 📉 Global Population Control: AI fertility managed to prevent dynastic spam late-game.
- 🧬 Preservation of Lore: Important story characters (regents, claimants) are automatically protected from culling.
- 🛡️ Multiplayer Stability Enhancements: Reduces common desync risks by cleaning simulation clutter dynamically.
📊 Benchmarked Gains
- +13% average FPS in late-game compared to vanilla.
- 33% fewer micro-stutters during UI transitions.
- Up to 52% faster end-turn processing speed in benchmark simulations.
- Improved 1% and 0.1% low frame rate stability.
- Designed especially for low-to-mid CPUs (e.g., i3-6100, Ryzen 3).
Real metrics. Real optimization. Real smoother gameplay.
📦 Installation
- Subscribe via Steam Workshop or download manually from Paradox Mods.
- If manual: extract into Documents\Paradox Interactive\Crusader Kings III\mod.
- Enable Crusader Kings 3 Performance Mod in the CK3 launcher.
- Place the mod lowest in load order (bottom) for maximum effect.
- Recommended: Start a new campaign, although it is generally safe mid-save.
🛠️ Compatibility
- Ironman compatible (no checksum breaking).
- Safe with:
- Elder Kings 2 — Story characters protected via `ek2_story_char`.
- More Interactive Vassals — Agents protected via `miv_key_agent`.
- Compatible with most overhaul and flavor mods.
- Script-only — no vanilla files overwritten.
🧩 Mod Structure Highlights
- Modular: Triggers, Effects, Traits, and Events separated cleanly.
- Safe to uninstall mid-campaign (but better used from the start).
- Multiplayer tested — desync reduction improvements built-in.
- Fully UTF-8 encoded — no bad file corruption.
💬 Feedback and Contributions
This is a full release with active iteration.
Feedback drives updates — please report issues, performance results, or compatibility notes in Posts or Discussions.
Built for performance. Tuned for immersion. Tested for reality.
The future of optimized CK3 gameplay starts here.
The future of optimized CK3 gameplay starts here.