This pack is designed for Forever Survival Servers, such as the Infinity Cube SMP. It's highly optimized for performance (FPS boosting), with quality-of-life enhancements.
Cloud's FPS Booster is a free Minecraft Java modpack. Compatible with Minecraft 1.21.5, 1.21.4. Downloaded 995 times (via CurseForge). Download it and open it directly in the game.