Warhammer 40K Space Marine 2 Steam Deck: Patch 12 Update Performance Tested

Warhammer 40K Space Marine 2 Steam Deck Performance Test: 2026 Steam Deck Games – Handheld Gameplay – SteamOS 3.7 – Patch 12.0

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🎮 Steam Deck OLED
🕐 Tested: 2nd March 2026
⚙️ SteamOS 3.7.19
🛠️ Installed on Internal Drive (Fresh Clean Install)
📀 Steam Version

Notes: As of Patch 12.0, Performance in Space Marine 2 has unfortunately regressed in the latest update by around 5-7 FPS compared to previous versions and introducing hitches during gameplay.

Tested on 3 different Steam Deck devices with multiple Proton versions and the results were unfortunately the same.

⏱️ Timestamps ⏱️
00:00 – FSR 3.1 Performance Handheld
02:30 – FSR 3.1 Performance + 2X FPS Lossless Scaling
04:30 – FSR 3.1 Performance Docked Late Game Mission
06:45 – Settings Menu
07:07 – FSR 3.1 Ultra Performance Docked

Steam – https://store.steampowered.com/app/2183900/Warhammer_40000_Space_Marine_2/

“Embody the superhuman skill and brutality of a Space Marine. Unleash deadly abilities and devastating weaponry to obliterate the relentless Tyranid swarms. Defend the Imperium in spectacular third-person action in solo or multiplayer modes.”

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Steam Deck OLED
SteamOS 3.7.19
4GB VRAM

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