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Best Subnautica 2 settings for the AMD Radeon Vega 3 (Ryzen 3000U iGPU) (2026)

On a AMD Radeon Vega 3 (Ryzen 3000U iGPU) (paired with a balanced Intel Core i5-8600K-class CPU), Subnautica 2 runs at roughly 18 FPS at 1080p with our optimized settings — up from about 7FPS with everything maxed. Here's the configuration and what each setting costs.

The AMD Radeon Vega 3 (Ryzen 3000U iGPU) is a entry-level graphics card with 2GB of VRAM, and Subnautica 2 is a moderately demanding game. Paired with the Intel Core i5-8600K, it is a real challenge at 1080p — about 18 FPS with FrameCoach's optimized settings, a clear jump from roughly 7 FPS with everything on High.

Across resolutions you can expect around 18 FPS at 1080p and 11 FPS at 1440p, dropping to roughly 6 FPS at 4K. The biggest free win is FSR upscaling — set it to Quality for a large FPS boost at little visual cost.

ResolutionAll-High FPSOptimized FPS
1080p718
1440p411
4K26
💡 Subnautica 2: Early-access Unreal Engine 5 - Lumen Global Illumination is the heaviest setting; upscaling helps a lot.
🚀 Biggest free win: enable FSR (Balanced) — about +55% FPS for a small sharpness trade.
Recommended settings
Upscaling — FSRBalanced+55% FPS
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.
CloudsLow+16% FPS
Volumetric clouds above the surface - can drain ~20 FPS at Epic. Medium is a big saving with little loss.
View / Detail DistanceLow+10% FPS
How far terrain and props render. Lower it a notch first if you dip in open water.
Shadow QualityLow+9% FPS
Shadow resolution and range. High is a strong step down from Epic.
Water & Caustics QualityLow+9% FPS
The shimmering light patterns and water detail that define the look. Medium keeps the vibe while saving frames.
Flora / Foliage DensityLow+7% FPS
Density of coral and plant life. Lower it for steadier FPS in dense reefs.
Effects QualityLow+5% FPS
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 Radeon Vega 3 (Ryzen 3000U iGPU) run Subnautica 2? See the verdict →

Subnautica 2 on other GPUs
Other games on the AMD Radeon Vega 3 (Ryzen 3000U iGPU)
Frequently asked

What FPS does the AMD Radeon Vega 3 (Ryzen 3000U iGPU) get in Subnautica 2?

With FrameCoach's optimized balanced settings, the AMD Radeon Vega 3 (Ryzen 3000U iGPU) averages around 18 FPS at 1080p in Subnautica 2 — up from about 7 FPS with everything on High.

Can the AMD Radeon Vega 3 (Ryzen 3000U iGPU) run Subnautica 2 at 1440p?

At 1440p with optimized settings, the AMD Radeon Vega 3 (Ryzen 3000U iGPU) averages roughly 11 FPS in Subnautica 2; turn on upscaling or aim for a locked 60 for the best feel.

What are the best Subnautica 2 settings for the AMD Radeon Vega 3 (Ryzen 3000U iGPU)?

Turn on FSR (Balanced), 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.