: If the game forces both inputs to control Player 1, try restarting with the controller connected first and avoid touching the keyboard until you are in-game. Third-Party Solutions
Running two independent viewports on a single PC is demanding. Here is how to maintain 60 FPS:
"Wait," Chris whispered, his fingers flying across the keys. "Look at this. Gold Edition... fan patches... the Split-Screen Fix."
Have the second player press the Start (or Options/Menu) button on their controller.
While the feature is now available, setting up a "Keyboard and Controller" exclusive configuration—where Player 1 uses a keyboard/mouse and Player 2 uses a gamepad—can still be tricky due to how the game assigns inputs. How to Enable Official Split-Screen in Resident Evil 5