Use Low Meshes (often called "Mobile Builds"). This is a pro-level favorite that drastically reduces building delay and improves clarity during end-game.
Turn off all replay options unless necessary, as recording gameplay in the background causes consistent micro-stuttering. Typical "Booster Pack" Components Fortnite Season 8 FPS Booster Pack
While different creators offer various "packs," they generally include these standard optimization files: Use Low Meshes (often called "Mobile Builds")
Set to Performance - Lower Graphical Fidelity . This aggressively removes animations and simplifies geometry to guarantee higher FPS than DirectX 11 or 12. Fortnite Season 8 FPS Booster Pack