QuirkOptimizations

QuirkOpts (QuirkOptimizations) is a Fabric client-side performance mod for Minecraft 1.21.4 designed to make the game feel faster overall.

Known Issue: Clicking on the credits text crashes your game due to a bug

It focuses on:

faster startup responsiveness
quicker resource pack reload handling
smoother client performance with configurable optimization toggles
a simple in-game settings screen opened with the O key
persistent user preferences saved automatically
Features include:

• Fast Startup toggle
• Fast Resource Reload toggle
• Reduced particles
• Low latency UI behavior
• Entity shadow toggle
• Aggressive mode for stronger performance-oriented adjustments

This mod is meant to be a simple, user-friendly optimization companion for players who want better responsiveness without complicated setup.