Screenshot 1.) If you are using a PS4 or PS5 controller, you have to use the DS4Windows Program. [github.com] In order to set that up, go to the settings tab in DS4Windows, "Controller/Driver Setup", click "Install ViGEmBus Driver", then restart your computer. 2.) Download the latest Nucleus Coop Program [github.com] to play split-screen. fBCd9e.