diop That's pretty much it, spot on. I suspect there's some new, ubiquitous low-level rendering technique. The odd occasion when we find a usable device from the last few years, it's something like Paranoid Android where they are using a stripped-down linux distribution to build their OS.
Even cable boxes are starting to bother me, sometimes. My wife has a Roku, and some apps hurt while others don't - but the same apps on my LG smart tv, or my PS3, or my XB360 are just fine.
So it's new OS'es, new chips, but I strongly STRONGLY suspect the display code.