volt-gui has been released in version 2.2.1.

The tool is a Vulkan implicit layer with a graphical interface that lets users adjust Vulkan behavior for games on Linux in a driver-agnostic way, covering things like texture filtering, the frame limiter, and display settings.

One day after version 2.2.0, 2.2.1 lands as a small fix around profile management. The default profile now reads “Default” in the dropdown and the tray menu (label only, the file stays default.toml), a separator sets it apart from user-created profiles, and profile names are now read case-insensitively. Existing 2.2.0 profiles carry over untouched.

Small Fix:

2.2.1 is a small fix over the 2.2.0 release, changing:

• The default profile now reads Default in the profile dropdown and in the tray menu. Only the label changed. The file is still default.toml, the launch command still says volt -- %command%, and 2.2.0 profiles carry over untouched.
• The dropdown now puts a separator between the default profile and the ones you made, so the two are not one flat list. It only shows up once you have more than one profile.
• Profile names are now read case insensitively. Default, DEFAULT and default all land on the default profile instead of a stray casing becoming a separate name. Same for the reserved names, so Probe and Options no longer slip past the check and collide with probe.toml or options.toml. This only matters if you type the name yourself, the GUI never had a way to produce those.
• Padding fix on the tray submenu title.

Source: GitHub