Dont know if anyone else has had this problem cant see anything similiar but my google-fu is weak on this kind of thing.
Mobs keep disappearing briefly in fights, it seems to get worse the closer I am. This Doesn't affect summoned mobs or players but everything else from kobalds to dragons keep blinking out of existance for about half a second then reappearing. I can see players hitting them + spell effects they have cast but not them. Also direct spells targeted at them disappear if they are gone at the time of impact I dont ever get the damage number appear on screen but they do appear in the combat log so obviously are doing something.
It also doesnt affect static mobs only the ones actually fighting...when not in combat they are fine