All setups › AMD RX 7900 XTX › Subnautica 2

Best Subnautica 2 settings for the AMD RX 7900 XTX (2026)

On a AMD RX 7900 XTX (paired with a balanced Intel Core i9-14900K-class CPU), Subnautica 2 runs at roughly 81 FPS at 4K with our optimized settings — up from about 81FPS with everything maxed. Here's the configuration and what each setting costs.

The AMD RX 7900 XTX 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 well at 4K — about 81 FPS with 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 239 FPS at 1080p and 143 FPS at 1440p, dropping to roughly 81 FPS at 4K. Its 24GB of VRAM is plenty for Subnautica 2, so textures can stay maxed. The biggest free win is FSR upscaling — set it to Quality for a large FPS boost at little visual cost.

ResolutionAll-High FPSOptimized FPS
1080p239239
1440p143143
4K8181
💡 Subnautica 2: Early-access Unreal Engine 5 - Lumen Global Illumination is the heaviest setting; upscaling helps a lot.
Recommended settings
Upscaling — FSROff
Subnautica 2 (Unity) supports Nvidia DLSS plus Frame Generation - there is currently no FSR for AMD/Intel. Enable it first for a big, low-cost FPS gain.
CloudsMediumbaseline
Volumetric clouds above the surface - can drain ~20 FPS at Epic. Medium is a big saving with little loss.
View / Detail DistanceHighbaseline
How far terrain and props render. Lower it a notch first if you dip in open water.
Shadow QualityHighbaseline
Shadow resolution and range. High is a strong step down from Epic.
Water & Caustics QualityMediumbaseline
The shimmering light patterns and water detail that define the look. Medium keeps the vibe while saving frames.
Flora / Foliage DensityMediumbaseline
Density of coral and plant life. Lower it for steadier FPS in dense reefs.
Effects QualityMediumbaseline
Particles, bubbles and volumetrics. Medium is plenty.
Texture QualityHighbaseline
Surface detail — cheap on FPS if it fits your VRAM.

⚡ Fine-tune this for your exact CPU & target FPS →

🎯 Can the AMD RX 7900 XTX run Subnautica 2? See the verdict →

Subnautica 2 on other GPUs
Other games on the AMD RX 7900 XTX
Frequently asked

What FPS does the AMD RX 7900 XTX get in Subnautica 2?

With FrameCoach's optimized balanced settings, the AMD RX 7900 XTX averages around 81 FPS at 4K in Subnautica 2 — up from about 81 FPS with everything on High.

Can the AMD RX 7900 XTX run Subnautica 2 at 1440p?

At 1440p with optimized settings, the AMD RX 7900 XTX averages roughly 143 FPS in Subnautica 2 — a smooth experience.

What are the best Subnautica 2 settings for the AMD RX 7900 XTX?

Use a balanced preset, keep ray tracing off for maximum FPS, and ease the heaviest options like Clouds 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.