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smooth entity/player motion between ticks at any framerate.
chunk geometry compiled off the main thread.
GL shaders pre-compiled on startup to kill first-use stutter.
pack switching no longer freezes the game.
AO values cached, recomputed only when blocks change.
simplified pathfinding for densely packed entities.
blends out small server position corrections.
caps packet drain time per frame to protect the render thread.
interpolates small server snaps; large ones still apply instantly.
short buffer that absorbs brief ping spikes.

A Small Optimization Mod that will help boost your FPS. Won't be massive but its noticeable.