Quilt 1.21.1 Mods
Sodium
Powerful rendering engine and optimizations, which improves frame rates and reduces micro-stutter, while fixing many graphical issues.
Cull Leaves
Adds culling to leaf blocks, providing a huge performance boost over vanilla.
Dynamic FPS
Reduce resource usage while the game is in the background or idle.
Get It Together Drops!
Adds options to control how dropped items combine, improving performance in areas with many items.
ImmediatelyFast
Immediate mode rendering performance of the client.
Max Health Fix
Fixes an old bug that causes the "Max Health" attribute to be ignored when a player joins the game.
Noisium
Optimises worldgen performance for a better gameplay experience.
Not Enough Recipe Book [NERB]
Completely removes the recipe book from the game, improving performance by removing recipe names.
MoreCulling
Changes how multiple types of culling are handled in order to improve performance.