Unpack the archive with software like PeaZip or 7zip, use the password pcgw
For Control, use the included tool to patch coregame_rmdwin7_f.dll (for DirectX 11) and/or coregame_rmdwin10_f.dll (DirectX 12) within the main game folder.
Edit renderer.ini in the game folder to set m_iOutputResolutionX, m_iOutputResolutionY, m_iRenderResolutionX and m_iRenderResolutionY to the desired width and height values.
For Quantum Break, use this guide and the patcher downloaded from here.
Control was tested with the latest EGS version at 3840x1080 and 5760x1080.
Quantum Break was tested with the latest Steam version at 3840x1080 and 5760x1080.
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The patcher unlocks 21:9 and any other resolutions unavailable in the game, however the UI will be too cropped to navigate every settings menu at anything wider.

Played the latest Steam demo at 2560x1080 for about 30 minutes and very briefly at 3840x1080 to test the solution.
Please leave a comment to let me know how it works in the full Epic version.

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