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Best Shadows of Doubt settings for the Steam Deck (RDNA2 iGPU) (2026)

On a Steam Deck (RDNA2 iGPU) (paired with a balanced Intel Core i5-8600K-class CPU), Shadows of Doubt runs at roughly 66 FPS at 1080p with our optimized settings — up from about 49FPS with everything maxed. Here's the configuration and what each setting costs.

The Steam Deck (RDNA2 iGPU) is a handheld graphics card with 4GB of VRAM, and Shadows of Doubt is a relatively light game to run. Paired with the Intel Core i5-8600K, it runs well at 1080p — about 66 FPS with FrameCoach's optimized settings, a clear jump from roughly 49 FPS with everything on High.

Across resolutions you can expect around 66 FPS at 1080p and 54 FPS at 1440p, dropping to roughly 31 FPS at 4K. The biggest free win is FSR upscaling — set it to Quality for a large FPS boost at little visual cost.

Resolution	All-High FPS	Optimized FPS
1080p	49	66
1440p	29	54
4K	17	31

💡 Shadows of Doubt: The citizen simulation is CPU-bound - graphics settings mostly tame the fog and neon, not the sim itself.

🚀 Biggest free win: enable FSR (Quality) — about +35% FPS for a small sharpness trade.

Recommended settings

Upscaling — FSRQuality+35% FPS

The voxel-noir art style hides a lower internal resolution well. But note: this game’s biggest cost is its citizen simulation on the CPU, which no graphics setting fixes.

Graphics QualityHighbaseline

The master quality preset. Shadows of Doubt (Unity HDRP) has a deliberately limited menu - this drives the fog, shadows and lighting together, since the game's ray tracing / reflections / AO are largely baked and not individually toggleable.

Post Processing (Bloom / Grain)Highbaseline

The film-noir grain and neon bloom. Cheap to lower if you prefer a cleaner image anyway.

Texture QualityHighbaseline

Voxel surface sharpness — nearly free.

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

🎯 Can the Steam Deck (RDNA2 iGPU) run Shadows of Doubt? See the verdict →

Shadows of Doubt on other GPUs

Other games on the Steam Deck (RDNA2 iGPU)

Frequently asked

What FPS does the Steam Deck (RDNA2 iGPU) get in Shadows of Doubt?

With FrameCoach's optimized balanced settings, the Steam Deck (RDNA2 iGPU) averages around 66 FPS at 1080p in Shadows of Doubt — up from about 49 FPS with everything on High.

Can the Steam Deck (RDNA2 iGPU) run Shadows of Doubt at 1440p?

At 1440p with optimized settings, the Steam Deck (RDNA2 iGPU) averages roughly 54 FPS in Shadows of Doubt; turn on upscaling or aim for a locked 60 for the best feel.

What are the best Shadows of Doubt settings for the Steam Deck (RDNA2 iGPU)?

Turn on FSR (Quality), keep ray tracing off for maximum FPS, and ease the heaviest options like Graphics Quality and Post Processing (Bloom / Grain) 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.