hayder1983
The Telstra TV3 is not special, only in that it is an HDMI input to the TV (rather than using the built in apps and tuner), so that seems to allow me to turn on Game Mode, and deactivate more of their signal processing.
It only seems to work at FHD (rather than 4k) with the cables I am using but I am ok with that as the TV is in lower resolution, and I only have the FHD Netflix subscription anyhow.
It was a different discomfort with a feeling a little like when your eyes are very dry/irritated from being out in the sun all day.
I had experienced a similar feeling years ago with a sharp Aquos S2 phone with I think an IGZO display, when I used it for navigation when driving for some hours.
In contrast to the OLED TV, I was unable to use the Sharp phone after that.