Projectile Optimizer
by VeloraFX
Projectile Optimizer shows thrown projectiles on the client at once, before the server confirms them, so arrows and similar shots feel less delayed.
What it does
When a player throws or fires a projectile, the client draws it immediately rather than waiting for the server's response. A temporary client copy stands in until the real projectile arrives from the server, and then the server's version takes its place. Only the client needs the mod, and it is released under the MIT License as open source. Builds cover 1.21.4 – 1.21.11, and the latest file is 1.0.0 for 1.21.11.
Single-player and multiplayer clients can run it alone, and the server needs nothing installed. The mod requires Fabric and is published for Fabric only.
Key features
Instant client preview
Thrown projectiles appear on screen at once, before the server has confirmed the throw.
Replacement on confirmation
The temporary client projectile is swapped out for the server's version when that version arrives.
Visual latency reduction
Shots show up sooner on screen, while the damage and hit results still come from the server.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
How it compares
Crossbow Optimizer is also client-side only and open source under the MIT License, with files for 1.21 – 26.3. Akinoko Crystal Optimizer is client-side only as well, but it is licensed as All rights reserved and targets 1.21 – 1.21.11.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Projectile Optimizer | Fabric | 1.21.4 – 1.21.11 | Client-side only | 2026-05-21 |
| Crossbow Optimizer | Fabric | 1.21 – 26.3 | Client-side only | 2026-10-09 |
| Akinoko Crystal Optimizer | Fabric | 1.21 – 1.21.11 | Client-side only | 2026-07-12 |
Questions
Does Projectile Optimizer need the server to have it installed?
In the catalog
Projectile Optimizer is one of 3,545 Optimization mods on ModsFinder, and one of 2,575 Optimization mods for Fabric. 19,862 mods support Minecraft 1.21.11.
Similar mods
What the author says
This mod improves projectile responsiveness by instantly showing thrown projectiles client-side before the server confirms them. Once the server sends the real projectile, the temporary client-side projectile is removed and replaced by the server-confirmed one. The server still fully controls the actual projectile…
Official listing
- Modrinth page
- modrinth.com/mod/projectile-optimizer
- Owner
- VeloraFX
- Published
- 2026-05-21
- Updated on Modrinth
- 2026-05-21
- Facts verified
- 2026-10-15