Lets Subnautica 2 (and any other game) opt into the GE-Proton build via Steam's per-game compatibility tool override, as a workaround for the Proton Experimental + DXVK D3D12 Mercuna hang. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Add GE-Proton (pkgs.proton-ge-bin) to programs.steam.extraCompatPackages
on ringtail. Subnautica 2 hangs at Mercuna plugin init under Proton
Experimental + DXVK D3D12; GE-Proton is available as a Steam per-game
compatibility option to work around it.