BUG: Optiscaler UI not showing up when pressing the insert button

[euphfo]

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Describe the Bug

Provide a clear and concise description of the issue.

To Reproduce

Steps to reproduce the behavior:

1. Go to Decky Plugin Store install Decky Framegen
2. Scroll to Decky Framegen** Click on copy Launch Command
3. Paste Launch Command to the game
4. Click on the controller button of the game in map one of the back button to the insert key
5. Click on Start game press the button that insert is mapped to -> Optiscaler UI not showing up

Expected Behavior

After mapping the Insert key to one of the back buttons pressing one of the buttons should open the Optiscaler UI

Actual Behavior

Optiscaler UI does not show up when you press one of the back buttons.

System Information

• OS/Distro: [e.g., SteamOS v3.7.15]
• Decky Framegen Version: [e.g., v0.11.15]
• Decky Loader Version: [e.g., v3.1.11]
• List of Installed Plugins + Versions: [Storage Cleaner v1.4.0, AutoFlatpacks v1.6.8, ProtonDB Badges, v1.6.0, SteamGridBD v1.6.0, Decky LSFG-VK v0.12.1]
• Steam Client Build Number: [1759461205]
  --Logs from: ~/homebrew/logs/'Decky Framegen'/ 2025-10-25 02.36.56.log

Additional Context

Provide any additional details that may help in diagnosing the issue.
I wanted to use Decky-Framegen&Decky LSFG-VK with Atelier Yumia but its not working.
In the FAQ from Optiscaler Yumia is one of the supported games so it should work.
I have seen on the Github page from Optiscaler there is an open issue #728 with Optiscaler not working on Linux I don't know if this could also be releated to my issue but I would like to point this out.

[Brunno-PT]

Same here. Realised Halo MCC had FSR so I tried using Optiscaler to get a newer version of FSR. Only managed to see the overlay once, but it was in the main menu, when there's no FSR running, so couldn't change anything. From then on, no overlay. The game controls stop working for a few seconds as if the overlay is open, but I can't see it.

Made sure there is no in-game keybind for INSERT. However, when in main menu, pressing Insert does change some icons in the game (not just changing, like when games change icons based on controller or keyboard inputs); new icons appear when insert is pressed. Probably a keybind conflict.

[codemle]

Same, Steam OS, Battlenet Diablo4

[Plumblossomx]

I also encountered the same problem.I’m not sure if it’s because of the version, but whether I use the author’s Decky plugin or manually import the Optiscaler files into the game directory, I can’t get it to work properly in the game.

[Brunno-PT]

I also encountered the same problem.I’m not sure if it’s because of the version, but whether I use the author’s Decky plugin or manually import the Optiscaler files into the game directory, I can’t get it to work properly in the game.

The issue just solved itself while I was changing TDP and FPS limits. The screen went black and back on as it does when we change FPS limit or refresh rate, and the optiscaler overlay was just there.

[dontpokethebear3893]

Strange. I'm trying to use this for the first time now in Gears of War Reloaded and I also cannot hit the insert button to show the optiscaler menu. I also can't select DLSS in the game menu. Seems like it's just not working at all. Even tried a reboot.

Lossless scaling is working though which means the launch commands saved properly.

[irwilove]

Same problem with bazzite and latest version of the framegen plugin, have you found any solution?

[brianx87]

I've found that binding certain keys to the Steam Decks rear buttons doesn't work, specifically L5 and R5, these are non-standard inputs, as in they are two additional key mappings that most other controller/mouse lack so I assume that not all bindings are going to be detected on those inputs. So I setup everything on the trackpad as a virtual menu instead.

Rename dxgi to winmm or version, I've had most success with these two renames.

Also try changing the directx version, some games will have better luck running in dx11 over dx12, I fixed Jusant yesterday by running the dx11 mode first, applying the fixes from the compatibility list then running in dx12.

If you haven't already check the compatibility list for any potential fixes, some of these are working for SteamOS and are required. Not all games are so easy to install, you need to list the game you're having an issue with.

https://github.com/optiscaler/OptiScaler/wiki/Compatibility-List
https://github.com/optiscaler/OptiScaler/wiki/FSR4-Compatibility-List