How do I confirm for sure the TV sees the resolution from the FireStick as 2160p ncted? While Hard Knocks is playing on my TV thru the FireStick I use the LG remote to check the resolution info and it says 2160p and the picture is awesome. When Hard Knocks is playing on my TV thru the TV LG app it says 1080p and the picture is not near as good as when coming from the FireStick.At least on my Sony UHD TV, the Firestick outputs 2160p for all content, so it must be upconverting. Obviously, charlesrshell should confirm the TV sees the resolution from the Firestick as 2160p.
As for what is going on inside the TV, I have no idea. It could be that the app delivers 1080p to the TV and the video processor upconverts it, or it could be the app upconverts the 1080p to 2160p, or maybe something else.