FPSFlow
Players who want higher frame rates in Minecraft 26.2 can use FPSFlow, a Fabric mod that targets the largest rendering bottlenecks in vanilla Minecraft.
What it does
FPSFlow runs on the client alone, so only the player's game needs it and a server can run without it. Its optimizations are individually toggleable, and a single preset setting covers four built-in performance profiles, with each profile rewriting the other settings automatically. On startup it detects installed mods and disables any features that overlap with them, and the config file is written automatically on first run.
The mod is published for Fabric only, for game versions 1.21.11 – 26.2, with the latest file 1.8.3 for 26.2 released on 2026-07-29. It is open source under the GNU Affero General Public License v3.0 only. Fabric API is required, and ModMenu is optional for an in-game settings screen. The author pairs FPSFlow with Sodium, Lithium, FerriteCore, ImmediatelyFast and EntityCulling, which are the recommended companions.
Key features
Entity culling
Entities hidden behind geometry are skipped during rendering, using a cache that refreshes every 10 ticks by default.
Occlusion sampling
Each entity's eye position is raycast from slightly above its geometric centre, which reduces false positives on small entities such as floating heads and armor stands.
Performance profiles
Four built-in presets adjust hardware-related settings in one step, and each can be tuned separately afterwards.
Resource pack handling
When a server pack reloads, rendering pauses for up to 3 seconds so item-frame maps and the hotbar show correct textures once the pack loads.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
How it compares
OcclusionX is a client-side Fabric mod for 1.21, open source under the GNU Lesser General Public License v3.0 only, which covers occlusion culling alone. Sign Fix is client-side only and open source under CC0 1.0 Universal, with files for 1.21.5 – 26.2, and targets sign rendering rather than entities. Rhenium works on Fabric for 1.21.1 – 26.3, can run on the client or the server, and is released under All rights reserved.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| FPSFlow | Fabric | 1.21.11 – 26.2 | Client-side only | 2026-07-29 |
| OcclusionX | Fabric | 1.21 | Client-side only | 2026-03-21 |
| Sign Fix | Fabric | 1.21.5 – 26.2 | Client-side only | 2026-03-25 |
| Rhenium | Fabric | 1.21.1 – 26.3 | Client or server, optional | 2026-10-06 |
Questions
Does FPSFlow need to be installed on a server?
Which mods should be installed with FPSFlow?
Does FPSFlow work with custom content systems?
In the catalog
FPSFlow is one of 3,545 Optimization mods on ModsFinder, and one of 2,575 Optimization mods for Fabric. 13,894 mods support Minecraft 26.2.
More from Affenix Studios
Similar mods
What the author says
Real FPS improvements — no placebo, no bloat. FPSFlow is a client-side Fabric optimization mod that targets the biggest rendering bottlenecks in vanilla Minecraft. Every feature is measurably effective, individually toggleable, and automatically adjusts to your hardware via four built-in performance profiles.
Official listing
- Modrinth page
- modrinth.com/mod/fpsflow
- Owner
- Affenix Studios
- Published
- 2026-06-08
- Updated on Modrinth
- 2026-07-29
- Facts verified
- 2026-10-15