Having a 1080p desktop with the Compute Stick is great but if you are sitting a bit far from your TV then reading dialogs and menus gets kinda hard. That's where the DPI settings on Windows come in handy. You get the full 1080p resolution while your desktop apps scale up and are easier to read from afar. Simply right click on your Windows desktop and select "Display Settings"
Set the slider of the size of text and apps to 150% or as you prefer.
If on the other hand you don't want such a permanent change you can always start Windows Magnifier that pops a dialog where you select zoom level and then conveniently turns into a magnifying glass icon that gives you the menu when you click it.