The file naming convention appears to be this:
In-game general video settings.
In-game advanced video settings (1/2).
In-game advanced video settings (2/2).
In-game key map settings (1/3).
In-game key map settings (2/3).
In-game key map settings (3/3).
The gamepad layout for the game.
Using a 4k monitor or super resolution techniques like Nvidia DSR results in very small HUD elements. No solution is known for this.
Some users report that the mouse feels laggy and looking around feels unnatural. Some have attributed this to an implementation of mouse acceleration, however Eidos developer Jimo has stated that there is no mouse smoothing (in the original version of the game).
Other users, under the impression that the game implemented mouse smoothing, seem to have found a registry setting that modifies mouse behavior and have had some success with editing it to fix mouse lag. Edit this specific registry setting:
HKEY_CURRENT_USER\Software\Eidos\Deus Ex: HRDC
6e 00 00 00
00 00 00 00
86 00 00 00
There are multiple solutions that people have reported work:
HKEY_CURRENT_USER\Software\Eidos\Deus Ex: HRDC\Graphics
An alternative work-around for some users, without disabling their graphics card, is to add "-nosound" to the Steam Launch Options. Some additional testing is needed to verify if this works for the majority of users.
Despite the wording of the setting being added, this does not disable sound for the game.
Download the mod and extract all of its files to <path-to-game>