Can't play on 49"

Hello with Samsung Odyssey Monitor in 49" format, can’t play to W1 or W2 reforged, completely broken each time i launch the game. My screen is like turning off on launch of one of those game… Solution ? Thanks

I have to play in Windowed mode. Sometime switching the game to a different screen worked (I know 1 screen) using Win+Shift+Left or Right arrow key, this puts it on the left or right side of the screen as if they are different monitors, but not always, its weird.