Steam Deck Settings

Maintain stable 45 FPS on Steam Deck

In-Game Settings

Settings	Value
Resolution	960x600
Quality	Very High
SSAA	OFF
Texture Filtering	AF 16X
Motion Blur	Normal (or Off depending on preference)
Tessellation	Very High
VSync	OFF

Steam Deck Settings

Settings	Value
Frame Limit	45 FPS (45 Hz)
TDP Limit	12 Watts
Manual GPU Clock	1200 MHz
Scaling Mode	FIT
Scaling Filter	FSR
FSR Sharpness	User Preference

Disable Frame Limit, Allow Tearing, Half Rate Shading are OFF.

Additional Comment

The settings above should provide 45 FPS all the time in handheld mode underground, and between 38-45 FPS outside in the snow.

The biggest performance hit for the dips outside is from Tessellation. So put Tessellation OFF for stable 45 FPS most of the time. With Tessellation OFF, it is possible to put the CPU down to 10 Watts for added battery life.

Personally, I prefer stable 45 FPS over stable 30 FPS. But alternatively, with Tessellation Very High and CPU at 10 Watts, the FPS rarely goes under 30 FPS; so it should be possible to have Tessellation Very High with CPU at 10 Watts and have 30 FPS most of the time.