I am having this issue as well. The pairing is great, and it works great as a remote for my nVidia Shield, but then the X1 will, after perhaps a week or so, stop controlling the Shield. It is important to note that when this happens, the X1 still controls everything else (TV, receiver, etc), it simply won't send BT commands anymore. If I reboot my hub (pulling the power cord out and plugging it back in) it will begin to work, and stay that way for roughly a week or perhaps two at the most. Is this being worked on for the new FW update?
Dragonwyntir