Resident Evil 9 Requiem Steam Deck: FSR4 + Lossless Scaling Performance Tested

Resident Evil 9 Requiem Steam Deck Performance Test: FSR4 + Lossless Scaling – Steam Deck Games – Handheld/Docked Gameplay FPS, Settings on SteamOS 3.7

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Resident Evil 9 Videos
Steam Deck FSR 4 – https://www.youtube.com/watch?v=lyjgoGtSh2A
Steam Deck – https://www.youtube.com/watch?v=IXaei1V0ec8
Switch 2 – https://www.youtube.com/watch?v=-PR9JXSBASs
ROG ALLY Z1 Extreme – https://www.youtube.com/watch?v=qES7rq-B82w
ROG XBOX ALLY X – https://www.youtube.com/watch?v=II0WFVG4t80
MSI Claw 8 – https://www.youtube.com/watch?v=Roe_2E6sFIs
Legion GO 2 – https://www.youtube.com/watch?v=EyH-Ji-diPY
FSR 4 Guide – https://www.youtube.com/watch?v=sLFr3hRvnUQ
Lossless Scaling Guide – https://www.youtube.com/watch?v=dmnEOZg7bKE

🎮 Steam Deck OLED
🕐 Tested: 28th February 2026
⚙️ SteamOS 3.7.19
🛠️ Installed on Internal Drive (Fresh Clean Install)
📀 Steam Version
⚙️ Low Custom FSR 4.0.2 Quality

⏱️ Timestamps ⏱️
00:00 – FSR 4 Vs FSR 3.1 Leon
00:10 – FSR 4 Vs FSR 3.1 Grace
00:31 – FSR 4 Vs FSR 3.1 Leon City Walk
00:39 – FSR 4 Vs FSR 3.1 Leon Bike
00:57 – FSR 4 Quality Leon City
02:28 – FSR 4 Leon Streets
03:50 – FSR 4 + 2X FPS Lossless Scaling Leon Streets
04:58 – FSR 4 Grace Police Officer
06:27 – FSR 4 Leon Care Center
07:55 – FSR 4 + 2X FPS Lossless Scaling 30FPS Leon Care Center
09:57 – FSR 4 Grace Care Center
11:45 – FSR 4 + 2X FPS Lossless Scaling 30FPS Grace Care Center
12:52 – Settings Menu
13:23 – How To Install FSR 4
13:44 – FSR 4 Leon City Handheld
14:52 – FSR 4 + 2X FPS Lossless Scaling Leon Handheld

NOTES: FSR 4 through Optiscaler will not work with RE9. Instead, we need to overwrite the existing FSR 3.1 file with the FSR 4 file. Guide timestamped in the video and file linked below.

FSR 4 DLL – https://www.mediafire.com/file/25fbfn1amlva6ct/amd_fidelityfx_upscaler_dx12.dll/

Steam – https://store.steampowered.com/app/3764200/Resident_Evil_Requiem/

“Requiem for the dead. Nightmare for the living. Prepare to escape death in a heart-stopping experience that will chill you to your core.”

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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

#SteamDeck #ResidentEvil #Gaming #Games #Steam #Proton #RE9Requiem #FSR4 #LosslessScaling