FPS optimizer for Subnautica 2 — fix underwater streaming, boost performance, reduce lag
subnautica-2 subnautica fps-optimizer unknown-worlds survival
A lightweight, open-source performance optimization tool for Subnautica 2 on PC. No bloatware. No background services. Just raw performance gains.
Tested on: Windows 10 / Windows 11 | NVIDIA & AMD GPUs | Intel & AMD CPUs
- 🌊 Underwater biome streaming optimizer
- ⚡ Ocean render distance performance mode
- 🖥️ Volumetric water shader tuner
- 🔧 Creature LOD distance optimizer
- 🎮 Submarine traversal FPS stabilizer
- 📊 Depth-based performance profiler
- Download latest ZIP from Releases
- Run as Administrator
- Select ocean quality preset
- Dive into Subnautica 2
⚠️ Note: Temporarily disable antivirus during installation — the optimizer patches game memory at launch. This is standard behavior for performance tools and completely safe.
| Component | Minimum | Recommended |
|---|---|---|
| OS | Windows 10 64-bit | Windows 11 64-bit |
| CPU | Intel i5 / Ryzen 5 | Intel i7 / Ryzen 7 |
| RAM | 8 GB | 16 GB |
| GPU | GTX 1060 / RX 580 | RTX 3070 / RX 6800 |
| Storage | 100 MB free | 500 MB free (SSD) |
| Hardware | Before | After | Gain |
|---|---|---|---|
| RX 5600 XT | 33 FPS | 50 FPS | +52% |
| RTX 3070 | 71 FPS | 94 FPS | +32% |
| RTX 4070 Super | 138 FPS | 169 FPS | +22% |
Results vary depending on scene complexity and system configuration.
The tool applies a series of low-level optimizations:
- Process Priority — sets game to High/Realtime CPU priority
- GPU Scheduler — enables Hardware-Accelerated GPU Scheduling (HAGS)
- Memory — pre-allocates and locks game assets in RAM
- Network — adjusts TCP/UDP buffers for online modes
- DirectX — patches shader cache for faster compilation
All changes are reversible via the built-in Restore Defaults button.
Q: Is this safe to use? A: Yes. The tool only modifies Windows performance settings and game launch parameters.
Q: Will I get banned? A: No. This tool does not modify game files or memory at runtime.
Q: Does it work with the latest patch? A: We update within 48h of any major Subnautica 2 patch.
PRs welcome! See CONTRIBUTING.md for guidelines.
git clone https://github.com/nodephantom/subnautica-2-fps-optimizer.git
cd subnautica-2-fps-optimizerMIT License — see LICENSE for details.
Made with ❤️ for the Subnautica 2 community
⭐ Star this repo if it helped you!