Recently, I tested how smoothly Windows only games can run on Linux through Steam’s Proton (a Wine fork), so I installed Grant Theft Auto V (uses Direct3D 11 API) through Proton running in my Linux desktop. The game works, but I could not find any of my cloud saves.

For anyone who interested in the location of the profile in Proton, it is: ~/.local/share/Steam/steamapps/compatdata/${ID}/pfx/drive_c/users/steamuser/Documents/Rockstar Games/GTA V/Profiles, where ${ID} is some ID (might be the game id in steam).

The corresponding path in Windows is: Documents\Rockstar Games\GTA V\Profiles, so Windows’ Documents folder is mapped to ~/.local/share/Steam/steamapps/compatdata/${ID}/pfx/drive_c/users/steamuser/Documents.

One needs to move the profile in order to manually synchronize the profile (e.g. saved games) in case cloud sync is not working.

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