Can the AMD R9 390 (8GB) run Subnautica 2? (2026)
The AMD R9 390 (8GB) is a entry-level card with 8GB of VRAM, and Subnautica 2 is a moderately demanding game. Paired with a balanced Intel Core i5-8600K-class CPU it averages about 62 FPS at 1080p with FrameCoach's tuned settings — up from roughly 40 FPS with everything on High.
| Resolution | All-High FPS | Optimized FPS |
|---|---|---|
| 1080p | 40 | 62 |
| 1440p | 24 | 60 |
| 4K | 14 | 36 |
At 1080p expect around 62 FPS, at 1440p about 60 FPS, and at 4K roughly 36 FPS with optimized settings. The single biggest improvement is FSR upscaling — set it to Quality.
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Can the AMD R9 390 (8GB) run Subnautica 2?
Yes. With FrameCoach's optimized balanced settings, the AMD R9 390 (8GB) averages about 62 FPS at 1080p in Subnautica 2.
What FPS does the AMD R9 390 (8GB) get in Subnautica 2 at 1080p?
Around 62 FPS at 1080p with optimized settings (up from about 40 FPS on all-High).
How do I make Subnautica 2 run better on the AMD R9 390 (8GB)?
Turn on FSR (Balanced) for the biggest free boost, keep ray tracing off, and lower the heaviest settings a notch. FrameCoach's full per-setting guide for this exact combo shows what each option costs.
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.