ArsNouveauPerformanceOptimization-1.21.1-1.1.0.jar is a release file of the Minecraft mod Ars Nouveau Performance Optimization for NeoForge, made for Minecraft 1.21.1. It was published on October 14, 2026 and is 0.1 MB in size. For the full description, screenshots and every other version, visit the Ars Nouveau Performance Optimization mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.
