==================================== AMD/ATI graphics cards users: ==================================== Out of the box, sikkmod is known to have some problems with systems that are equipped with an AMD/ATI GPU, which causes all sorts of visual glitches that can make the game unplayable. But as this is mostly due to a problem related to AMD drivers, it's relatively easy to fix, and I've been able to develop and play this mod with an AMD card (HD 7900 series) by following these steps: 1.) Go to the game directory (C:\Program Files (x86)\Steam\SteamApps\common\Doom 3) and find "Doom3.exe" 2.) Make a new copy of this file with the following name: "Doom_3.exe" 3.) Right-click on "Doom_3.exe and select "Create shortcut" 4.) Move that shortcut to the desktop, then Right-click on it and select "properties". 5.) Click on the "Shortcut" tab and put the following line at the end of the "target" field: +set fs_game redux Example: "C:\Program Files (x86)\Steam\steamapps\common\Doom 3\Doom_3.exe" +set fs_game redux
Using this custom shortcut, you will be able to play Doom 3: Redux on an AMD GPU without any issues. The only downside is that you won't be able to use the Steam overlay as the game is now being loaded outside of Steam.