Motion blur headaches are nothing new -- there is a small section of population that is blur-sensitive (but not flicker-sensitive).
Occasionally, some people are prone to motion blur headaches (source
) and forum members regularly come here to gain the comfort of busting motion blur (our namesake). Over the years, I've seen hundreds of anecdotes, and I can even be occasionally prone to strain-by-motion-blur (in extreme eye-tracking situations, like doing hours of TestUFO Panning Map tests) but there are people who are extremely sensitive to it. It's indeed a real problem, albiet a niche one.
Try reducing ULMB duty cycle a little bit (strobe length) -- it will reduce motion blur further and slightly reduce the amount of crosstalk (at least at the top edge of the screen). It dims the screen a lot, however.
Try reducing contrast and raising the brightness of blacks. Narrowing the dynamic range of an LCD often greatly reduces strobe crosstalk, at the cost of colorfulness/picture quality. But if your vision is so sensitive to motion artifacts, this is also worth a try.
TN screens will generally have less ghosting than IPS in strobed modes. Monitor with tweakable strobe lengths & phase settings are also very helpful (e.g. XL2720Z) but LightBoost mode on the old VG248QE's are extremely good at eliminating ghosting. Very few monitors are as artifact-free as VG248QE's, and some of the techniques that is done to do this, often reduce brightness/contrast. Please note, people who are more sensitive to flicker, will not find these instructions relevant... Most people are more sensitive to pain-by-flicker than pain-by-motion-blur