Auto Optimization
by tgyki
With Auto Optimization installed on the client, the game watches frame rate and adjusts settings on its own once FPS falls below a set limit.
What it does
The mod monitors the frame rate continuously. Once frame rate falls below the limit configured on its general tab, where the default is 30, the mod wakes up and checks nearby chunks for typical sources of slowdown, including too many entities, piles of particles and costly block updates. The scan radius and detection cooldown can be changed, and the scan covers between 10 and 30 chunks around the player.
Once a cause is found, the mod applies real-time adjustments that reduce strain on the client, for example culling dropped items, reducing particles, or lowering the render distance of a chunk that is causing heavy load. After the frame rate recovers, the changed settings are restored automatically. Installation needs Mod Menu, and Fabric is the only loader with files, published for 1.21.8, 1.21.9 and 1.21.11.
Key features
Automatic lag detection
Nearby chunks are scanned for entities, particles and block updates that may be slowing the client.
Real-time adjustments
Dropped items, particles and distant render distance are reduced only while the frame rate is low.
Automatic restoration
Once FPS recovers, the mod returns the affected settings to the values the player had before.
Configurable scan
The FPS threshold, scan radius and detection cooldown can be set in the general tab without manual tweaking of video options.
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
Who it’s for: Anyone who prefers steadier frame rates without repeatedly tweaking video options, and who would rather pick one FPS target and leave the rest to the mod, is the intended audience.
How it compares
Prism Performance is a Fabric mod for 1.21 – 1.21.11, client-side only and released under the MIT License, but it is not open source. Position show is also client-side only and open source under the MIT License, with files for 1.21 – 1.21.4. VexFPS is client-side only, released under the MIT License, and published only for 1.21.11.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Auto Optimization | Fabric | 1.21.8 – 1.21.11 | Client-side only | 2026-02-10 |
| Prism Performance | Fabric | 1.21 – 1.21.11 | Client-side only | 2026-03-23 |
| Position show | Fabric | 1.21 – 1.21.4 | Client-side only | 2025-01-23 |
| VexFPS | Fabric | 1.21.11 | Client-side only | 2026-06-18 |
Questions
Does Auto Optimization need Mod Menu?
Does Auto Optimization have to be installed on the server?
Which game versions have files?
In the catalog
Auto Optimization 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.
More from tgyki
Similar mods
What the author says
AutoOptimizer is a lightweight client-side performance mod designed to automatically improve your FPS while you play. The mod continuously monitors your frame rate and, if it drops below the limit you set, it instantly activates smart optimization features to stabilize performance. AutoOptimizer scans up to 13 nearby…
Official listing
- Modrinth page
- modrinth.com/mod/auto-optimization
- Owner
- tgyki
- Published
- 2026-02-10
- Updated on Modrinth
- 2026-02-10
- Facts verified
- 2026-10-15