Screen mapping doesn't work properly with multiple monitors on Win 8.1 #4

I have two monitors at 1080p, trying to set full area of both desktops to full area of tablet with forced aspect ratio

• Using the Full desktop option only maps the full tablet area to monitor 1
• Using DISPLAY 1 maps the full tablet area to the left half of monitor 1
• Using DISPLAY 2 maps the full tablet area to the right half of monitor 1