Swiftly Optimized 

Added Support for Forge 1.21.1!

A Minecraft modpack designed to enhance FPS and provide a smooth gaming experience. It includes essential mods to improve performance and gameplay, and is compatible with Forge/Fabric. (This modpack works in any server.)

supported minecraft versions: 1.7.10, 1.12.2, 1.16.5, 1.18.2, 1.19.2, 1.19.4, 1.20.1, 1.20.4, 1.21.1, 1.21.3, 1.21.4, 1.21.5, 1.21.6, 1.21.8, 1.21.9, 1.21.10