Over the past week or so, Steam Deck circles have been filled to their plastic curves with chatter over Decky Lossless Scaling: a plugin for the handheld’s Decky Loader toolbox that makes the game-agnostic frame generation of Lossless Scaling work, more or less, in the Deck’s main Gaming Mode. Quite the feat, considering Lossless Scaling itself is officially unsupported on SteamOS.
In truth, this is a veritable Russian doll of unofficial spinoff projects. The plugin, by developer xXJSONDeruloXx, is based on the separate lsfg-vk by PancakeTAS, which is in turn a Linux compatibility layer for the original, Windows-based Lossless Scaling (and, while I’m crediting folk, a nod also goes to YouTubeist Deck Wizard for pointing this all out first). The long and short of it is that once everything is set up, you can make your Steam Deck do its best DLSS 4 impression by attempting to double, triple, or possibly quadruple the framerate output in your choice of games – though having tried it in a few myself, I’m not convinced you’ll always want to.