Hello @pangomin, issues with MangoHUD should be directed that the MangoHUD issue tracker unless you have something directly actionable for a Proton dev to ponder.
Please post this over at https://github.com/flightlessmango/MangoHud.
Nothing extracted yet.
In games that rely on DXVK rather than VKD3D, MangoHUD does not start under any Proton version, even though it works correctly when using Wine.
Heroic Games Launcher log — I have also tested it through both Steam and the command line interface, but it does not make any difference.
This is an example log from one of the affected games.
Although the logs already contain this information, I am including my system specifications here as well.
OS: Arch Linux
GPU: RX 5600XT
Mesa: Mesa 25.2.7-arch1.1