!lag
by !not
With !lag installed, the Video settings screen gains a combined panel for graphics tuning, FPS tuning and a built-in FPS display, all on the client.
What it does
!lag is a Fabric optimization mod for the client. It brings performance-focused graphics tuning into one searchable settings screen, merged with the vanilla video settings and grouped into organized tabs. Options cover culling of entities and block entities, distance and frustum culling, and a particle budget that limits how many particles are drawn. An optional fullbright setting and a lightweight built-in FPS HUD are included, along with smooth hold-to-zoom that responds to scrolling.
The goal is to make the game easier to tune and to limit expensive visuals, so unnecessary rendering can be reduced without changing gameplay logic. Players can apply recommended settings from one place. Fabric API is required. The mod is for Fabric only, with files for 1.21.4, 1.21.10, 1.21.11, 26.1.2, 26.2 and 26.3; the latest file is 3.0.0 for 26.3, published 2026-10-11. It is client-side only, so servers do not need it, and it is released under the MIT License but is not open source.
Key features
Combined video and performance screen
Vanilla video settings and the !lag options appear together in one merged screen.
Safe culling controls
Entity and block entity culling can be adjusted, along with distance and frustum culling.
Particle budget limiter
A cap on particles keeps busy scenes from drawing more particles than the chosen budget.
Smooth hold-to-zoom
Zoom is held on a key and adjusted with the scroll wheel for a smoother transition.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
Use cases
Tuning a weak computer
Players with low frame rates can cut entity, particle and distance rendering from the same screen.
Finding one option quickly
The search box and organized tabs help locate a single setting among the many graphics options.
Who it’s for: Players who want to tune graphics and frame rate on the client without touching gameplay. Servers do not need the mod.
How it compares
Rhenium is for Fabric 1.21.1 – 26.3, has all rights reserved and is not open source, and either side can run it. FPSFlow is client-side only, open source under the GNU Affero General Public License v3.0 only, and covers 1.21.11 – 26.2. Particle Culling is client-side only, open source under the MIT License and covers 1.21 – 26.3, so it does one job where !lag bundles several.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| !lag | Fabric | 1.21.4 – 26.3 | Client-side only | 2026-10-11 |
| Rhenium | Fabric | 1.21.1 – 26.3 | Client or server, optional | 2026-10-06 |
| FPSFlow | Fabric | 1.21.11 – 26.2 | Client-side only | 2026-07-29 |
| Particle Culling | Fabric | 1.21 – 26.3 | Client-side only | 2026-10-13 |
Questions
Does !lag need Fabric API?
Does the server need !lag?
Which game versions have files?
In the catalog
!lag 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.
Similar mods
What the author says
!lag™ is a client-side Fabric optimization mod for Minecraft 1.21+ through 26.3. It brings performance-focused graphics tuning, searchable settings, safe culling, particle limits, smooth zoom, and a lightweight FPS HUD into one clean client mod. The goal is simple: make Minecraft easier to tune and smoother to play…
Official listing
- Modrinth page
- modrinth.com/mod/lag
- Owner
- !not
- Published
- 2026-03-27
- Updated on Modrinth
- 2026-10-11
- Facts verified
- 2026-10-15