Tick Sync
by LogGamja
Tick Sync, a Fabric client mod, shortens the wait between server packets and client ticks so that entity movement shows on screen sooner.
What it does
Minecraft runs a 20 TPS system in which each tick lasts 50 ms. Once the client has an entity update in hand, it normally holds the display until the running tick finishes. If a packet arrives 2 ms into a tick, the client can wait 48 ms before showing it. Tick Sync reduces that delay by shifting ticks forward or backward so the wait is minimized.
The mod works in singleplayer, but the client and the server remain separated, so it changes only how the client handles timing. Random delays from lag can disrupt the sync, which the mod works to correct. Its stated purpose is timing-sensitive play, such as command block contraptions and displays that depend on precise updates.
Tick Sync is published for Fabric only, for 16 release versions 1.21.1 – 26.3. The latest file is 1.4.0 for 26.1.2, dated 2026-08-25. It is released under All rights reserved and is not open source.
Key features
Shorter packet wait
Cuts the lag between incoming server data and the client's tick cycle, so entity position changes appear sooner.
Tick shifting
Shifts ticks forward or backward to minimize the time spent waiting for the current tick to end.
Lag-aware correction
Random delays from lag can break timing, and the mod adjusts the sync to counter them.
Timing for command blocks
Aimed at builds that rely on precise timing, such as command block and datapack contraptions.
Compatibility
Latest build for each game version and loader.
26.x5 of 5 versions with builds
1.21.x11 of 11 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Required by 1 mod
Use cases
Command block contraptions
Redstone-style builds driven by command blocks depend on exact timing, and shorter tick delays keep their updates in step.
Timed displays
Block displays and similar visuals that change on specific ticks show their updates with less lag between server and client.
Who it’s for: Players who build timing-sensitive command block or datapack contraptions in singleplayer or on a server, and who run the client with Fabric.
How it compares
Fast Click is a client-side Fabric mod that also changes click timing, released under the MIT License and open source, with files for 1.21.11 – 26.2. DeathGhostFix is server-side only, released under The Unlicense and open source, for 1.21.11 – 26.1.2, so it runs without any client install. Configurable Mining Delay is client-side only, open source under the MIT License and covers 1.19 – 26.3, which is a wider version span than Tick Sync.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Tick Sync | Fabric | 1.21.1 – 26.3 | Client-side only | 2026-08-25 |
| Fast Click | Fabric | 1.21.11 – 26.2 | Client-side only | 2026-07-24 |
| DeathGhostFix | Fabric | 1.21.11 – 26.1.2 | Server-side only | 2026-05-27 |
| Configurable Mining Delay | Fabric | 1.19 – 26.3 | Client-side only | 2026-03-25 |
Questions
Does Tick Sync need to be installed on the server?
Which loader does Tick Sync use?
Which mod requires Tick Sync?
In the catalog
Tick Sync is one of 3,545 Optimization mods on ModsFinder, and one of 2,575 Optimization mods for Fabric. 8,071 mods support Minecraft 26.3.
More from LogGamja
Similar mods
What the author says
This mod was created to be used for playing command block / datapack based world contents, and I take no responsibility for use for any other purpose. This mod reduces the delay between server packets and client ticks. This mod also works in Singleplayer, as the client and server are still separated.
Official listing
- Modrinth page
- modrinth.com/mod/tick-sync
- Owner
- LogGamja
- Published
- 2025-09-15
- Updated on Modrinth
- 2026-08-25
- Facts verified
- 2026-10-15