Hello my name is Lexi and I make mods and modpacks. Mantipack is a modpack based around fps and has made me get over 400 fps while recording on my 2010 pc (My 2010 pc specs: CPU: Intel(R) Xeon(R) CPU E5630 @ 2.53GHz Base speed: 2.53 GHz Sockets: 1 Cores: 4 Logical processors: 4 Speed 2.47 GHz GPU: AMD Radeon HD 5570 16GB)
Mods:

Lithium (Fabric) (by jellysquid3)
Sodium Extra (by FlashyReese)
Better Sodium Video Settings Button (by LimeShulkerBox)
Mod Menu (by ProspectorDev)
Clumps (by Jaredlll08)
Simple Voice Chat (by henkelmax)
Better Biome Blend (by FionaTheMortal)
Right-Click-Harvest (by koelle25)
Dynamic FPS (by juliand665)
AppleSkin (by squeek502)
WI Zoom (by alexander9892)
BetterF3 (by cominixo)
Inventory HUD+ (by dmitrylovin)
Better Beds (by Motschen)
WorldEdit (by sk89q)
Fabric API (by modmuss50)
Sodium (by jellysquid3)
Iris Shaders (by coderbot)
Better Command Block IDE - Fabric 🌠 (by Jtorleon)
And more!

This modpack will boost your fps. For example I went from 80 fps while recording to 400!

This modpack along with making your fps very high adds some features that I will add in the future due to them being in beta