Cemu

Splitscreen multiplayer is broken, you can configure a Pro Controller for Player 2, but when you Press A, it thinks the controller is a Wiimote, and it is simply unplayable

In Black Ops 2 with title update v128, in the multiplayer RPL, address 0291c68c is where a function is called to detect controller input. changing this function call to "li r3, 3" was a workaround to make pro controllers work in older Cemu versions, but now even that wont work in 1.26.0d and beyond.