Crystal Optimizer
by Fleckyfnr
Crystal Optimizer is a client-side Fabric mod that changes how End Crystals and respawn anchors are shown and removed in combat, for Crystal PvP players.
What it does
Instant Break makes a crystal disappear the moment it is hit, so it no longer lingers, and a hit that does not go through is followed by the crystal reappearing on its own. Instant Replace makes respawn anchors react at once rather than stuttering briefly. A background timeout keeps the state of crystals and anchors correct over time.
Several rendering options trade visual detail for frame rate. Distance Culling hides crystals that are far away, Static Crystals shows them without spinning or bobbing, Reduce Particles lowers the particle count, Explosion particles can be switched off, and a fixed cap limits the total. The mod is released under the MIT License and is not open source. The latest Fabric build is dated 2026-09-01 and covers the 8 release versions listed for the mod.
Key features
Instant crystal break
A crystal is removed from view as soon as it is hit, rather than fading out after a short delay.
Instant respawn anchor replace
Respawn anchors update immediately when they are placed or charged, without a brief visual stutter.
Distance culling
Crystals beyond a chosen distance are hidden, which can raise frame rate during large fights.
Adjustable particle reduction
Particle output can be lowered, and explosion particles or the total particle count can be capped.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Crystal PvP
Players who fight with crystals and anchors can reduce visual clutter and keep frame rate steady during heavy crystal spam.
Low-end hardware
Players on slower machines can turn down distance, particle and crystal animation effects to gain frames in busy scenes.
Who it’s for: Players who run Fabric and want faster visual feedback from crystal and anchor actions. Only the client needs the mod, so servers do not have to install it.
How it compares
Zero Delay Crystals is also a client-side Fabric mod under the MIT License, published for 1.21.1 – 1.21.11, so it covers older builds than this mod. Only Old Boom Damage is server-side only, under the MIT-0 license, and targets 1.21.11, so servers run it alone and players do not install anything.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Crystal Optimizer | Fabric | 1.21.4 – 1.21.11 | Client-side only | 2026-09-01 |
| Zero Delay Crystals | Fabric | 1.21.1 – 1.21.11 | Client-side only | 2026-07-30 |
| Only Old Boom Damage | Fabric | 1.21.11 | Server-side only | 2026-01-30 |
Questions
Does Crystal Optimizer need to be installed on the server?
Which game versions does Crystal Optimizer support?
Does Crystal Optimizer change how combat works on a server?
In the catalog
Crystal Optimizer is one of 29,952 Game mechanics mods on ModsFinder, and one of 19,630 Game mechanics mods for Fabric. 19,862 mods support Minecraft 1.21.11.
Similar mods
What the author says
The optimization mod for Crystal PvP and Anchor PvP – for faster, smoother and more responsive gameplay. CrystalOptimizerSync makes placing crystals, breaking crystals and igniting anchors feel instant, without the annoying server delay. On top of that come handy performance options for more FPS in big fights.
Official listing
- Modrinth page
- modrinth.com/mod/fleckycrystaloptimizer
- Owner
- Fleckyfnr
- Published
- 2026-06-25
- Updated on Modrinth
- 2026-09-01
- Facts verified
- 2026-10-15