Configuring your resolution

Setting a resolution

iSize H=

iSize W=

X (iSize W=) Y (iSize H=) aka 1920 1080 1080p 1600 900 900p 1440 810 1366 768 1280 720 720p 800 400 Not recommended!

Making sure it runs in a fullscreen borderless window

bTopMostWindow= bMaximizeWindow= bBorderless= bFull Screen=

Open the configuration tool, then click the "Tweaks" tab at the top. There should be a Custom Resolution section on the bottom right. Make sure Custom Resolution is enabled (should have a blue box, toggle by clicking on it). Now, set your X and Y values to the resolution you want. If you are unsure, look below for a list of 16:9 resolutions.Go to your Documents folder, then go into My Games, then Fallout4. Now open Fallout4Prefs.ini with any text editor (notepad works). Now, press Ctrl+F and type iSize. You should be able to find two lines of code that say something like:and:Set these values to what you want your resolution to be, with W being the X and H being the Y. Screen resolutions are usually written as the X times the Y. If you are unsure, look below for a list of 16:9 resolutions.As an example, this is what it should look like in the tool if you are using 1280x720; And this is what that same example should look like if you are editing the ini.There are still a few settings we need to change to make it all work.Under Custom Resolution, make sure Borderless is enabled, but Fullscreen, Maximize, and TopMost are all disabled. Items are enabled if they are blue, and disabled if they are black (very dark gray).It should now look like this;Near the lines we edited earlier, you should find these lines;Set all of these to 0, which you should set to 1.