I'm also curious as to what display damage high-speed refresh causes, and what reasonable guidelines at avoiding this might be. I have an Onyx BOOX Max Lumi, whose display is excellent, and do very occasionally watch video. (More often I'll simply play the audio via mpv in Termux.)
https://sarata.com/manpages/bb.1.html
Here videoed off an emissive display: https://yewtu.be/watch?v=WubDqdV2r9k
And what seems to be a direct screen capture: https://yewtu.be/watch?v=JFFJYJ6QkME
I'm also curious as to what display damage high-speed refresh causes, and what reasonable guidelines at avoiding this might be. I have an Onyx BOOX Max Lumi, whose display is excellent, and do very occasionally watch video. (More often I'll simply play the audio via mpv in Termux.)