Dark Souls 3
For some reason the resolution is stuck at 1080 and changing it in game does not work. You can update GraphicsConfig.xml in steam/steamapps/compatdata/374320/pfx/drive_c/users/steamuser/Application Data/DarkSoulsIII
Steam with Proton
Driver 390 didn’t work and the game would crash after 5 seconds, however updating to 396.54 solved the problem sudo add-apt-repository ppa:graphics-drivers/ppa
However, even after the driver update the game would not even start properly so I ran the Steam game file verification tool and it did pick up one file as being invalid. After obtaining the new copy of it the game ran sweet as. Which ever file it was must have gotten corrupted somehow when I was trying different driers etc.
FPS – around 48 on High with a 1060 6GB. changing the quality to Medium didn’t make much of a change.