Dozer
by Patina
Dozer, a Fabric and Ornithe client mod, lowers the frame rate limit and game volume automatically when the game window loses focus.
What it does
When the Minecraft window is in the background, Dozer reduces the frame rate limit and the sound volume so the game uses fewer resources while the player is elsewhere. Its behavior is driven by the focus state of the window: once the window is unfocused, the values drop, and they return when focus comes back. Because the change happens only on the client, a server does not need anything installed to benefit from it.
Dozer is useful for players who leave the game running while they work or browse, and it adds no visible interface to the game. Its settings are set in the code rather than through an in-game screen. Dozer is open source under the MIT License and is published for Fabric and Ornithe. Only the client needs it, and it can be used alongside other frame rate tools that do not change the same values.
Files cover 25 release versions, with 0.1.0 for 1.12.2 as the latest file on both loaders. The mod is released as a single build per loader, so players pick the file that matches their Minecraft version.
Key features
Background frame rate limit
The frame rate limit drops while the game window is unfocused, which lowers the load on the processor during idle time.
Volume reduction when unfocused
Game volume is lowered to 5% while the window is in the background and restored when it regains focus.
Staged frame rate drop
After the window has been unfocused for 5 minutes, the frame rate limit falls further to 10, reducing resource use during longer absences.
Focus-based automation
No manual switching is needed, because the mod reacts to the focus state of the window on its own.
Compatibility
Latest build for each game version and loader.
1.12.x3 of 3 versions with builds
1.11.x3 of 3 versions with builds
1.10.x3 of 3 versions with builds
1.9.x5 of 5 versions with builds
1.8.x10 of 10 versions with builds
1.7.x1 of 1 version with builds
Only full game releases are shown. This mod publishes no snapshot builds.
How it compares
Idle Tweaks covers Fabric, Forge and Quilt on 1.8.9 – 1.21.11, and its license is Creative Commons Attribution Non Commercial No Derivatives 4.0, so it is not open source. Dynamic FPS is open source under the MIT License and runs on Fabric, Forge, NeoForge and Quilt for 1.14.3 – 26.3. Legacy Dynamic FPS targets Ornithe only, on 1.8.9, and is also open source under the MIT License, which makes it the closest match for a 1.8.9 Ornithe setup.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Dozer | Fabric and Ornithe | 1.7.10 – 1.12.2 | Client-side only | 2026-01-08 |
| Idle Tweaks | Fabric, Forge and Quilt | 1.8.9 – 1.21.11 | Client-side only | 2026-04-04 |
| Dynamic FPS | Fabric, Forge, NeoForge and Quilt | 1.14.3 – 26.3 | Client-side only | 2026-09-16 |
| Legacy Dynamic FPS | Ornithe | 1.8.9 | Client-side only | 2026-09-04 |
Questions
Which loaders does Dozer support?
Does Dozer need to be installed on the server?
Are the background values adjustable?
In the catalog
Dozer is one of 3,545 Optimization mods on ModsFinder, and one of 2,575 Optimization mods for Fabric. 2,920 mods support Minecraft 1.12.2.
More from Patina
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Official listing
- Modrinth page
- modrinth.com/mod/dozer
- Owner
- Patina
- Published
- 2026-01-08
- Updated on Modrinth
- 2026-01-08
- Facts verified
- 2026-10-15