Metal Gear Solid 4 Steam Deck Lossless Scaling Performance Tested: LSFG-VK Frame Generation

Metal Gear Solid 4 Guns of The Patriots Steam Deck OLED Playable On Steam Deck Performance Gameplay Graphics Settings Tested – SteamOS 3.7 – Lossless Scaling Test

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Note: Please stay tuned to the channel for a full tutorial on how to setup Metal Gear Solid 4 & RPCS3 on the Steam Deck with Lossless Scaling in the near future. I appreciate your patience and support, and in the meantime, if you have any questions, feel free to leave a comment.

– Steam Deck OLED
– 2nd August 2025 Game Test
– SteamOS 3.7.13 Stable
– Installed to Internal Drive
– New Clean Installation
– Lossless Scaling Decky 0.8.1
– RPCS3 AppImage

– Decky Lossless Scaling Install Guide – https://www.youtube.com/watch?v=SXnqmHoUejg
– 20 Lossless Scaling Games Tested – https://www.youtube.com/watch?v=voQTtiFSVpQ
– LSFG-VK PancakeTAS Github – https://github.com/PancakeTAS/lsfg-vk
– Download Decky Lossless Scaling VK – https://github.com/xXJSONDeruloXx/decky-lossless-scaling-vk/releases

00:00 – 3X FPS Act 4
01:10 – 2X FPS Metal Gear Fight
01:59 – 3X FPS Metal Gear Fight
02:51 – Lossless Settings
03:05 – 3X FPS New Game
03:37 – Story
04:37 – Codec Audio Fixed
05:54 – Default FPS Middle East
07:04 – 2X FPS Raging Raven Fight
07:52 – 3X FPS South Africa
08:40 – RPCS3 Settings
09:31 – RPCS3 Patches
09:39 – 3X FPS Shadow Moses
10:22 – 3X FPS Nuclear Warhead BLDG
11:19 – SPOILER WARNING
11:30 – Epilogue Ending Spoilers

Acknowledgements: A big thank you to Haze for providing RPCS3 Settings for Metal Gear Solid 4 after a wealth of testing on the Steam Deck for optimal performance throughout the game.

During testing, it was discovered that for Lossless Scaling to work with MGS4, we must enable/disable “Multithreaded RSX” in the RPCS3 Settings GPU tab in order to bypass the freezes on launch.

In addition, a big thank you to PancakeTAS for creating LSFG-VK and JSON Derulo for creating the Lossless Scaling Decky Plugin.

Metal Gear Solid 4 RPCS3 Wiki – https://wiki.rpcs3.net/index.php?title=Metal_Gear_Solid_4%3A_Guns_of_the_Patriots

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Steam Deck OLED 1TB
SteamOS 3.7.13
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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