Game doesn't stay in full screen when switching to a different window with Alt-Tab.

When setting it to use a controller, the game became unresponsive. Fixed by opening the ProfileOptions_profile file and changing the GstInput.GamePad line to 0 instead of 1. This file is located at ~/.var/app/com.valvesoftware.Steam/.local/share/Steam/steamapps/compatdata/1222690/pfx/drive_c/users/steamuser/My Documents/BioWare/Dragon Age Inquisition/Save (this may be slightly different for non flatpak users).

I could only get the game to load my saves with the nvidia 510 driver. After updating to the 515 driver, the game was significantly choppier on all screens, and seemed to be stuck waiting for something when loading (music would play and the tips screen would show, but the screen would eventually go black and I would have to force quit). Reverting to the 510 driver seems to have fixed that issue.