Fix easy lightening or darkening

Make your game lighter or darker

In some cases, the game will remain too dark or too bright even if the brightness value is set to maximum or minimum.

Before you begin, make sure the game is running in full-window mode. If so, you can adjust the brightness of your game. This problem can be solved by increasing the interval setting limit.

To do this, open the folder where The Witcher 3 is installed (by default for Steam it is C:\Program Files (x86)\Steam\steamapps\COMMON\The Witcher 3) and follow the path \bin\settings\r4game\user_config_matrix\pc. Then open the rendering.xml file in your favorite text editor.

In this file you need to change the lines at the beginning:

<val id = "GammaValue" displayName = "gamma" display type = "GAMMA;0.1;1.9;90" tag = "not found". For example, in order to increase the maximum brightness (making the game The Witcher 3 brighter), it is necessary to set a value approximately equal to displayType="GAMMA; 0.5; 5; 225".

Alternatively, to make Witcher 3 darker, you need to set displayType="GAMMA;-4;1;250" value.

These are only approximations, you may need to set other values. After changing the value, you need to save the file, restart the game and try changing the brightness again in the video settings. Now the maximum brightness level (first example) or minimum level bar (second example) should be well above the standard and you can easily find the optimal value for your monitor.

Attached, I placed two files as explained above, one with a slightly lighter bar and a larger one. Just replace it with a folder.