On a NVIDIA RTX 4090 (paired with a balanced Intel Core i9-14900K-class CPU), Subnautica 2 runs at roughly 92 FPS at 4K with our optimized settings — up from about 92FPS with everything maxed. Here's the configuration and what each setting costs.
The NVIDIA RTX 4090 is a flagship 4K-class graphics card with 24GB of VRAM, and Subnautica 2 is a moderately demanding game. Paired with the Intel Core i9-14900K, it runs great at 4K — about 92 FPSwith FrameCoach's optimized settings. That already clears a smooth frame rate on High, so our tuning keeps the visuals as high as possible instead of chasing extra frames.
Across resolutions you can expect around 263 FPS at 1080p and 162 FPS at 1440p, dropping to roughly 92 FPS at 4K. Its 24GB of VRAM is plenty for Subnautica 2, so textures can stay maxed. The biggest free win is DLSS upscaling — set it to Quality for a large FPS boost at little visual cost.
| Resolution | All-High FPS | Optimized FPS |
|---|---|---|
| 1080p | 263 | 263 |
| 1440p | 162 | 162 |
| 4K | 92 | 92 |
⚡ Fine-tune this for your exact CPU & target FPS →
🎯 Can the NVIDIA RTX 4090 run Subnautica 2? See the verdict →
With FrameCoach's optimized balanced settings, the NVIDIA RTX 4090 averages around 92 FPS at 4K in Subnautica 2 — up from about 92 FPS with everything on High.
At 1440p with optimized settings, the NVIDIA RTX 4090 averages roughly 162 FPS in Subnautica 2 — a smooth experience.
Use a balanced preset, keep ray tracing off for maximum FPS, and ease the heaviest options like Global Illumination (Lumen) and View / Detail Distance down a notch. The full per-setting breakdown is above.
FPS figures are estimates from a generalized model (hardware tier × game load × per-setting weights), not live benchmarks — real performance varies by scene, drivers and game version.