I do not generally have problems with lighting or motion or blur. Today after doing Castrum I had a headache from the spell effects of characters spells. One in particular kept putting a big white ball over and AOE pack. I didn't notice what class was tossing it out (Viper maybe?) That white ball was eye searing. Totally new thing for me. I don't remember ever seeing anything in game that hurt that much and I have been playing 5 years.