We used to be able to hide or lower them, but for some reason or another SE went and forced their full appearance no matter your settings. Quite frustrating. I hate them for the same reason I have all other spell effects turned down: as a melee, it's an absolute nightmare trying to see incoming mechanics when the boss is obscured by fire, lights, and smoke. Things that the caster Limit Breaks have an abundance of.

Please, SE, restore our ability to dial them back.