1280x1024 is not really a resolution anyone intentionally supports anymore. Many modern games are advertising at least 1920x1080 as a minimum requirement now. If you still use a 1280x1024 display I would recommend looking into upgrading as even 1920x1080 with medium refresh rate (120 Hz+) support is pretty cheap now.
If your 1280x1024 display is special, such as being used for a commercial/industrial purpose, then you can always move it to the side and use the other display when it is not required.