Atomic Heart Best Steam Deck Settings

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Atomic Heart is a first-person adventure filled with nightmarish creatures, futuristic technologies, and a twisted Soviet-era world waiting to be unraveled. It’s also Steam Deck Verified! Immerse yourself in this one-of-a-kind shooter experience with the best Steam Deck Settings for Atomic Heart.

Atomic Heart Best Steam Deck Settings

Compatibility Settings
Proton Version Default
BIOS Settings
UMA Frame Buffer Size 4G
CryoUtilities Settings
Swap File Size 16GB*
Swappiness 1
*Set to as large as your Steam Deck will allow

Atomic Heart is Steam Deck Verified and runs fine without any tweaking. You may get a more stable performance by increasing your Deck’s UMA Frame Buffer Size to 4GB and using CryoByte33’s excellent CryoUtilities to increase the Swap File Size.

For best results, install Atomic Hearts onto your internal drive. The game spends a lot of time reading from the drive and this reduces or eliminates most stuttering related to disk reads.

One issue that hasn’t disappeared is the font size and readability. The game still uses ridiculously small fonts, so you might need to put on your reading glasses to catch all the prompts.

Balanced Settings (Native@40fps | ~1h45m)

Atomic Heart suffered a few performance issues at launch, but subsequent updates have greatly improved the gaming experience on the Steam Deck. Indoors you can get a full, stable 60 frames per second, but once you step outside, the framerate drops to around 40fps. We’ve opted for stability over sheer performance, so this configuration caps the framerate at 40fps using Steam’s Gamescope menu.

If you really want that stable 60fps, consider reducing the graphics preset to Low, dropping the resolution, and using FSR. Keep in mind that the FSR implementation in Atomic Heart introduces a lot of artifacts and extreme blurriness, which affects readability and playability. We don’t recommend it.

In-game Quality Settings
Preset High
Depth of Field High
Motion Blur Off
Anti-aliasing High TAA
DLSS Frame Generation Off
FidelityFX Super Resolution Quality
Animation Quality Max
Shadows High
Ambient Occlusion High
Visual FX High
Number of Objects High
Materials High
Volumetric Fog High
Postprocessing High
Textures High
Texture Anisotropy 4
3D Model Quality High
Vegetation Density High
Hard Drive Speed SSD
Shader Cache On

Steam Deck Performance Menu Settings
Refresh Rate 40
Framerate Limit 40
Allow Tearing Off
Half Rate Shading Off
Thermal Power (TDP) Limit Off
Manual GPU Clock Control Off
Scaling Filter Linear

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