The monitor resolution is 1920x1080. Resolution 2560x1600 fixed since the game was first installed This mode is not supported for full screen setup. The current resolution is not cleared. You cannot change the resolution on an external device due to change the resolution. Changed window mode, window mode (without details) resolution cannot be changed to locked state. Window mode (without tether) is a fixed resolution, broken graphic and cannot be used ALT+ENTER Shortcut to Changed Mode and Used Modifying the save file to change the resolution will not change. I want to play a game on the Full screen. Tell me how to change the resolution.