qb74
Thank you for the meaningful input! Two questions please:
(1.) Can you describe more about how you test for KSF phosphor (red trailing during motion)?
(2.) The comments regarding the 240 Hz refresh rate are interesting: since my symptoms have been provoked by desk lights and screens that are on but without looking at any visual content, I haven't considered that the refresh rate might be terribly pertinent. But I do acknowledge that all the monitors I've been able to tolerate were 60 Hz, and the intolerable monitors were between 60 Hz and 144 Hz. I'm wondering if you are thinking there might be a connection with 240 Hz refresh rate and a difference in backlight type or backlight constancy/ flicker somehow?
Just as a bit of context on your other points: PWM on or off itself doesn't seem to affect me, the primary monitor I can use 12 hours a day (Asus VS247H-P) uses PWM and doesn't affect me at all, and my other completely tolerable main work monitor Dell P2014HT doesn't use PWM. Regarding color calibration, the offensive monitors have always seemed to bother me no matter what color settings I play with. In the offensive monitors there is something about the "quality of the light" that is painful, regardless of color settings.
Thank you much to everyone for the thoughts! I remain determined in this quest.