Changing the Game Resolution

I used to be able to setup the game resolution with a Level Blueprint to start the Game with 1280x720. See Video below…

r.setRes 1280x720w

This time, I started the project with the First Person Shooter.
For some reason, after packaging the game, the resolution blueprint does not work.

Are there any other project settings in which I can force the Game to launch in the resolution 1280x720?