If you are looking to specifically optimize for a server like Hypixel, I can recommend specific entity culling settings.
Smooths out chunk loading to eliminate stuttering while moving.
Decouples mouse input from your framerate, making your aim feel incredibly crisp even during frame drops. FoamFix (Anarchy Edition / Backported) 1.8.9 fps boost mod
If you prefer a pre-packaged experience with built-in performance tweaks, these clients are the community standard: Lunar Client
Even the best mods won't help if your settings are wrong. Use these tweaks alongside your mods: If you are looking to specifically optimize for
Generally considered the king of FPS. It uses a custom version of Java and highly optimized rendering code.
If you do not want to manually manage multiple Forge mods, several pre-packaged custom clients integrate all these FPS-boosting modifications into a single, cohesive launcher. Client Name Performance Level Primary Focus Best Use Case Competitive PvP Hypixel BedWars & SkyWars Badlion Client Anti-Cheat & Customization Competitive Factions & Arenas Feather Client Modpack Flexibility Custom Forge/Fabric Hybrid Setups FoamFix (Anarchy Edition / Backported) If you prefer
OptiFine is the foundational mod for performance. It offers: Significantly faster rendering.
This happens because different algorithms interact differently with your CPU architecture. Remove BetterFPS entirely, or test each algorithm in the BetterFPS settings menu until you find one that works. Some users simply skip this mod altogether and rely on OptiFine + Patcher.
Now go dominate that PvP arena without the lag.