After you’ve cloned the [Unreal Engine ue5-main branch], run the setup to install dependencies and generated project files, you’ll open the solution in Visual Studio. This might prompt to install some components. The next step is right-click the solution in Solution Explorer and open configuration manager.
This list is long and you’ll need to manually uncheck every project in the build list except for UE5. When you uncheck the first item you can use the down arrow key and the spacebar to go as fast as possible.
From here, Control+Shift+B to build and wait a couple hours. Set UE5 as the startup project.
Control+F5 to launch and you’ll have Unreal Editor 5.5 up and running with about half the required space!
