The Developer Options menu can unlock a hidden settings that can improve the performance of your Fire TV or let you sideload apps. Here's how to acces it.

Near the bottom of this screen, select the “Developer options” entry that you just unlocked. From here, tick the box next to the “USB debugging” entry, then press “OK” on the popup.

All Android devices feature a Developer Options menu that lets you tune and debug application performance. Here's a quick tutorial on how to enable it.