Cthulhu The Cosmic Abyss Steam Deck Performance: Is it Playable?

Cthulhu The Cosmic Abyss Steam Deck Performance Test: 2026 Steam Deck Games – Handheld/Docked Gameplay – SteamOS 3.8.2 – Lossless Scaling Bonus Test

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Thank you to NACON for providing a Steam Key to showcase Cthulhu The Cosmic Abyss On the Steam Deck.

🎮 Steam Deck OLED
🕐 Tested: 16th April 2026
⚙️ SteamOS 3.8.2
🛠️ Installed on Internal Drive (Fresh Clean Install)
📀 Steam Version
⚙️ Low Graphics FSR Performance

⏱️ Timestamps ⏱️
00:00 – Portal Opening Chapter 1
03:55 – Cthulhu Temple Chapter 3
08:34 – Settings Menu
08:42 – 2X FPS Lossless Scaling
09:52 – Mining Station
11:41 – Maze Dive Investigation

NOTES: Cthulhu The Cosmic Abyss is playable on the Steam Deck with Low Preset and FSR. There will be times when the FPS drops sharply entering a new area or scripted events occur.

During Chapter 3, when going deeper into the temple, the sound would become distorted for me as demonstrated in the video. Hopefully a patch will fix some of these issues in the future.

Steam – https://store.steampowered.com/app/2760560/Cthulhu_The_Cosmic_Abyss/

“A mining station in the Pacific abyss is no longer responding. As an investigator of the occult, unravel the mysteries of the deep. Test your wits and sanity in this lovecraftian thriller.”

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Steam Deck OLED
SteamOS 3.8.2
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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