Diablo 4 Steam Deck: FSR4 + Lossless Scaling Performance Tested

Diablo 4 Steam Deck Performance Test: 2026 Steam Deck Games – Handheld Gameplay – SteamOS 3.7 FSR4 + Lossless Scaling

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❗️All gameplay is captured live on handheld so you can always see the real Handheld experience, including FPS, settings, and battery life during extended play.

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FSR 4 Guide – https://www.youtube.com/watch?v=sLFr3hRvnUQ
Lossless Scaling Guide – https://www.youtube.com/watch?v=dmnEOZg7bKE
Install Battle.Net Guide – https://www.youtube.com/watch?v=SSngMSLoIK8
Install World of Warcraft Guide – https://www.youtube.com/watch?v=Bja2Tzv0O0I

🎮 Steam Deck OLED
🕐 Tested: 14th February 2026
⚙️ SteamOS 3.7.19
🛠️ Installed on Internal Drive (Fresh Clean Install)
📀 Steam Version

⏱️ Timestamps ⏱️
00:00 – FSR 4 Vs FSR 2
00:15 – Low FSR 4 Quality Spirit Born
01:48 – Settings Menu Docked
02:15 – Medium FSR 4 Quality
03:05 – Medium FSR 4 Quality 2X FPS Lossless Scaling
04:10 – Medium FSR 2 Quality
05:07 – Medium FSR 4 Quality Paladin
06:09 – Medium FSR 2 Quality Paladin
07:40 – Low FSR 4 Quality Paladin Handheld
09:04 – Low FSR 4 Quality 2X FPS Lossless Scaling
10:15 – Settings Menu Handheld
10:26 – Low FSR 2 Quality Spirit Born Handheld
11:53 – Low FSR 4 Quality
13:45 – Low FSR 4 Quality 2X FPS Lossless Scaling

Steam – https://store.steampowered.com/app/2344520/Diablo_IV/

“Join the fight for Sanctuary in Diablo® IV, the ultimate action RPG adventure. Experience the critically acclaimed campaign and new seasonal content.”

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Steam Deck OLED
SteamOS 3.7.19
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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