Word for moving quickly enough for things to seem blurry

I want to describe an anecdote, but want to use a word to describe the time period. So in physics when you move quickly enough to approach the speed of light, time breaks down and relativity kicks in. I want to describe a period in the past that I was moving so quickly at the time (such as through college) that the events seem to mesh together. Like a very, very fast moving object in relativity. Preferably a single word I can use such as

I was moving _____ so everything was unclear.

Or

I was moving like a ____ so everything seems to mesh together.

Or

I was so ____ that everything seems blurry now.

Naturally I can just give the long winded physics explanation, but that’s extremely verbose, and distracts from the subject matter because the need to explain what the metaphor is directly.