Astrum is a carefully crafted Fabric modpack for Minecraft 1.21.11, built to address the common performance issues players face on multiplayer servers. By combining proven optimization mods with essential quality-of-life features, this pack ensures smooth frame rates, shorter load times, and reduced memory usage without sacrificing visual fidelity. It is specifically tuned for the astrummc.net network, providing a stable and responsive experience for all server activities.

This pack is ideal for players who want a lightweight, client-side enhancement that does not alter core gameplay. Whether you are a regular on astrummc.net or simply seeking a reliable performance boost for any 1.21.11 server, Astrum delivers. The included Simple Voice Chat enables clear communication with teammates, while shader support via Iris allows you to enjoy enhanced visuals when your hardware permits. The modpack avoids game-changing modifications, focusing instead on stability and compatibility.

Performance optimizations with Sodium, Lithium, FerriteCore, and ImmediatelyFast to minimize lag and improve FPS
Shader support through Iris, letting you customize graphics without compromising stability
Built-in Simple Voice Chat for seamless voice communication during multiplayer sessions
Dynamic Lights and Smooth Zoom for added convenience and immersion
High-resolution screenshots and improved rendering to capture and enjoy your builds at their best

Requirements: Minecraft 1.21.11 and Fabric Loader 0.19.3. Astrum is designed primarily for astrummc.net but works on any compatible server. It is based on the structure of Fabulously Optimized and inherits its focus on lightweight, client-side improvements. Note that this pack does not include any gameplay-altering or server-side mods; it is strictly a performance and utility enhancement.

Astrum - Optimized Fabric Modpack for Multiplayer