I bought an LG right around Thanksgiving last year. It was fine most of the time, but then I watched a hockey game. I pretty quickly noticed that the left half of the screen was slightly darker than the right. It was only noticeable with a very light colored background (the white ice in hockey). LG wound up sending someone to fix it, but ultimately, I didn't want to have a tv that someone had worked on within a month of buying it. I wound up returning it (Costco) and lucked my way into a really nice sale on a Samsung. The same amount of money got me a tv and a wireless soundbar. The LG left me a little skeptical about their tvs.
I have a wall mounted tv with a single hdmi line running through the wall to where I store my media (directv box and PS4). I really didn't want to go to the effort of running any extra cables through that wall, so I bought a splitter with 4 hdmi inputs. I bet it's the same one you have. It seems to recognize the device like you said, but I tend to have both on at the same time, so I'm using that remote a lot. My only concern is that the remote is so damn small that it's bound to disappear at some point, especially with how recklessly my wife will toss it just about anywhere in the room. Still, it was well worth the cost so that I could avoid fishing that extra line through the wall and avoiding what probably would have been some visible wires behind the wall mount.