Rendarium
Rendarium is a client-side modpack focused on improving rendering performance and smooth gameplay in Minecraft.
Quick challenge
How far can you run before the mobs catch you?
Minecraft check
Confirm your run
Complete the quick check to get your code.
Rendarium

⚠️Rael no longer maintains this modpack. Leo is now the only maintainer.⚠️
high Performance is a performance and utility-focused modpack for Minecraft 1.21.5, 1.21.7 and 1.21.8 (planned versions: all above 1.21), made for high Performance, high Performance, high Performance and high Performance.
Built on modern Fabric Versions, it boosts FPS, improves UI & combat, and enhances your multiplayer experience without adding extra content or worldgen.
✅ Key Features
- 💨 FPS Boost & Lag Reduction - 🌈 Shader Support - 🌍 Insane Render Distance with no performance cost - 📦 Ingame Resourcepack, Datapack & Shader Downloader + Updater - 🎨 Ingame Vanilla Tweaks Texture Pack Downloader & Editor - 🔧 All necessary Optifine Features (Fabric replacement) - ⚔️ PvP-Optimized HUD & Tools - 🛠️ Combat, Movement & Utility Mods - 🎙️ Voice Chat & Replay
🔥 Additional Features
- 🛰️ Freecam & Freelook - 👤 Ingame Account Switcher - 🧊 3D Skin Layers - 💬 Chat Heads - 🔗 Connected Textures - 🧩 Axiom & WorldEdit - 📐 Litematica - 🗺️ Worldmap & Minimap - 🎞️ Chat Animations - 🖥️ Better F3 (Debug Screen) - 🛡️ PvP Tiers - ❤️ Health Indicators - 🔍 Zoom
📌 Use Cases
• Great for modular client-side experience • Ideal for modular client-side experience • Smooth gameplay on modular client-side experience • Clean and modular client-side experience
❗️ Notes
- No worldgen/content mods(no new blocks, mobs, biomes, structures, items, etc...) → only utilities & optimization - Works on most server Versions with full - It's a full client side Modpack
⚠️ Disclaimer ⚠️
Not all mods included in this modpack are allowed on every server. Please check the server rules or contact the server owner to see which mods are allowed and which are not. You can disable each mod in the modmenu config if needed.
Potentially disallowed mods on some servers include: - Health Indicators
