Boost your frame rates with LSFG-VK (Lossless Scaling Frame Generation) - built into Junk Store with simple toggles.

Prerequisites: You need Lossless Scaling from Steam (paid) and the lsfg-vk dependency installed.

Note: LSFG doesn't work with all games and may actually make some games perform worse. Your mileage may vary.

Before you start, you'll need two things:

Purchase and install Lossless Scaling from Steam. Once installed:

Run this command in Desktop Mode (Konsole):

curl -fsSL https://raw.githubusercontent.com/ebenbruyns/lsfg-vk-deck-installer/refs/heads/main/install.sh | bash

Once installed, Junk Store will automatically detect and use it.

Pro Tip: You don't need the separate Decky LSFG-VK plugin if you're using Junk Store. Our built-in integration handles everything.

Open Settings Menu
From the game page in Junk Store, click the Settings menu (cog icon).
Select Proton Configs
Select Proton Configs from the menu.
Show All Options
Set the dropdown to All to reveal advanced options.
Enable LSFG
Find the LSFG section and enable LSFG-VK. Tweak the settings if needed.

Important: Both LSFG settings need to say Enable for LSFG-VK to work.
Save Changes
Press X to save your changes!

LSFG not working? Try a different Proton version. Some games work better with specific GE-Proton releases.
Settings not saving? Make sure you press X to save before exiting.

Most issues are quick to sort out. Here's where to start.

Still stuck? Open a support ticket right in the Support Portal

For game-specific issues, feedback, or just a chat, you'll find us on: