Maybe my eyes are sensitive or something, but I'm really bothered by these flashing things all over the place. If I look at a computer monitor from far away or at the corner of my eye, it appears to be flashing. If they're lower than 85hz refresh, I can see the flashing as well. Flourescent lights are even worse. If I look at something under a flourescent light, at an angle where the light itself is on the outside edge of my vision, the flashing gives me a headache. Very annoying.