Subnautica 2 Steam Deck Performance Test: 2026 Steam Deck Games - Handheld/Docked Gameplay - SteamOS 3.8.4 - Lossless Scaling Bonus Test
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🎮 Steam Deck OLED
🕐 Tested: 14th May 2026
⚙️ SteamOS 3.8.4
🛠️ Installed on Internal Drive (Fresh Clean Install)
📀 Steam Version
NOTES: Subnautica 2 is Steam Deck Verified, although the game would not launch for me unless I used GE Proton. Others have gotten the game to launch with Proton Hotfix but this didn't work for me on 2 Steam Decks.
Hopefully the issue can be rectified soon with a patch/update/proton fix.
⏱️ Timestamps ⏱️
00:00 - Low Preset TSR Balanced Handheld
01:14 - 2X FPS Lossless Scaling
02:44 - Full Settings Menu
03:31 - Low Preset TSR Performance
04:32 - Low Preset TSR Balanced 30FPS
06:06 - Low Preset TSR Balanced 30FPS + 2X FPS LSFG
07:58 - Low Preset No Upscaling 30FPS
09:15 - Medium Preset TSR Balanced 30FPS
Steam - https://store.steampowered.com/app/1962700/Subnautica_2/
"Subnautica 2 is an underwater survival adventure set on an all-new alien world, developed by Unknown Worlds. Play alone or with friends in 4-player co-op. Adapt to survive by building custom bases and crafting tools. Explore the unknown to uncover the mysteries hidden within the depths."
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Steam Deck OLED
SteamOS 3.8.4
4GB VRAM
Under section 107 of the Copyright Act 1976, allowance is made for “fair use” for purposes such as criticism, comment, news reporting, teaching, scholarship, education, and research.
No Games Are Included Or Added
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