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TT20 (TPS Fixer)

TT20 helps reduce lag by optimizing how ticks work when the server's TPS is low.
by AVALTInteractive
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68,644 downloads
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Updated Jul 6, 2026
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Performance

TT20

TT20 helps reduce lag by optimizing how ticks work when the server's TPS is low.

fabric-api discord-plural

Regarding singleplayer

While you can still use this mod in singleplayer, some things may not work correctly. You can always toggle any features in the configuration. We're trying our best to make this mod compatible with singleplayer, so if you find any issues, please create an issue.

🤔 What does TT20 stand for?

TT20 is an abbreviation of the ticks*tps/20 formula. It's used to calculate the amount of ticks something takes, while taking the TPS into account.

⚠️ Caveats

TT20 only fixes the symptoms of TPS lag, not the actual lag. It re-calculates the amount of ticks things take. For example, when you're breaking a block it takes the original break time, multiplies it by ticks and divides it by 20 (the maximum TPS). This ensures that the end user feels almost no lag, even if the TPS is very low.

⚙️ Roadmap

Finished

  • Block break delay
  • Eating delay
  • Item pickup delay
  • Block entity tick acceleration (experimental)
  • Portal delay
  • Sleeping delay
  • Potion delay
  • Fluid spread speed
  • Random tickspeed delay
  • Day/nighttime delay

Work in progress

  • Entity death animation(?)
  • Block state delay

If you believe there is features missing, please tell us by creating a new issue (yes, also if you want compatibility with other mods!)

tt20-0.8.3b+mc26.1.1-fabric.jar
MC Fabric, Server, Quilt, 26.1, 26.1.1, 26.1.2
Release 2026-06-16 Get
tt20-0.8.3b+mc26.1.1-neoforge.jar
MC NeoForge, Server, 26.1, 26.1.1, 26.1.2
Release 2026-06-16 Get
tt20-0.8.3a+mc1.19.2-forge.jar
MC Forge, 1.19.2, Server
Release 2026-06-09 Get

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