Forcing Fullscreen at a custom resolution

Ok, so my laptop is garbage but runs fortnite 40-60 FPS in a window the size in the image provided, I want to play at that resolution but in a full screen , so I want to find out if I can set a specific resolution in a full screen . The lowest the in game settings go are 720p, please no smart answers like “just run it full screen on 720”, cos my laptop is garbage and 20-30 FPS is not fun. Any clues?

windows-7 fortnite-battle-royale

Best Answer

From what little research I did, it seems that any methods of changing graphics quality and setting custom resolutions within the UE4 config files are outdated and won't work anymore, but there is a 'proper' way of setting custom resolutions.

You can create custom resolutions in your AMD drivers, allowing you to select them in the game, if the game supports custom resolutions, rather than only allowing pre-selected resolutions.
(These instructions only work for AMD gpu's)

First you need to open your AMD Radeon Settings by right clicking on the desktop and selecting the AMD Radeon Settings option
Click on the Display tab on the bottom of the settings window and click + Create where it says Custom Resolutions
Change your Horizontal resolution and Vertical resolution to your preferred values and click ?Save
After you have saved your custom resolution, it should be available to pick in the game.

There is a chance that Fortnite might not pull the available resolutions from Windows, but rather have a list of pre-set resolutions instead, in which case this will not work.