vertiginous (adjective) 

Something that’s vertiginous (ver-TIH-jih-nus) is unstable – marked by change that is so quick and/or frequent that it gives one the feeling of being disoriented, dizzy. As used by Rebecca Makkai in a NYT review of Spring by Ali Smith: “Is it possible, in this vertiginous moment, for a novel to be both timely and deep? Timeliness, these days, requires a quick trigger finger….”