: Some graphics plugins may not handle this shift correctly. In that case, try moving the windowed emulator to the second monitor first and then pressing Alt + Enter . Option 2: Set the Second Monitor as "Primary"
Since Project64 leaves most graphics decisions to the plugin, check your specific plugin's advanced settings. project-64-fullscreen-second-monitor
The fastest way to move Project64 to your second monitor is by using standard Windows shortcuts while the game is running. : Some graphics plugins may not handle this shift correctly