Smooth Movement improves visual and gameplay consistency under low TPS or network lag by compensating and smoothing entity, item, projectile, falling blocks, and sky movement. Does lag exist if you cannot perceive it?

Instead of letting the game appear jittery, jumpy, or desynced when the server struggles, Smooth Movement adapts movement and timing so the game continues to feel consistent, even when the server cannot tick at a stable 20 TPS.

What this mod does

Minecraft already interpolates some movement on the client, but under real server lag this often isn’t enough. Smooth Movement extends this idea by making movement lagaware, smoothing both clientside rendering and server-side motion.

This results in less jitter, less snapping, fewer visual corrections and a more consistent gameplay during lag.

This mod does not remove lag, it makes lag less disruptive and noticeable.

Features

Sky movement(sun,moon,stars)

Clientside: Prevents visible snapping of the sun, moon, and stars under lag.
Serverside: Compensates daytime progression on the server to preserve vanilla day length

Entity movement

Clientside: Smooths living entity movement to no longer appear jittery/laggy
Serverside: Compensates entity movement on the server to keep vanilla behavior.

Item movement

Clientside: Reduces jumpy item motion, especially noticeable in water.
Serverside: Compensates item movement on the server to keep vanilla behavior.

Minecart movement

Clientside: Smooths minecart movement to no longer appear jittery/laggy
Serverside: Compensates minecart movement on the server during low TPS to preserve vanilla physics behavior

Projectile movement

Serverside: Compensates projectile movement on the server to match the clients visual movement

Player movement

Serverside: Compensates player movement calculations during low TPS to reduce rubber-banding issues on the client.

Falling Blocks movement

Serverside: Compensates falling block movement on the server to preserve vanilla physics behavior.

Experience orb movement

Serverside: Compensates experience orb movement on the server to preserve vanilla collection behavior.

All features are individually configurable and are only active during lag.

Smooth Movement can be installed client-only, server-only or for best results on both sides.

The mod provides fine grained configuration options to enable or disable:

Client-side smoothing
Server-side compensation
Individual entity types (items, projectiles, minecarts, etc.)

Designed to be non-invasive
Does not alter game rules or balance
No changes to world data
Safe to add or remove
Works alongside other performance mods