Time is a measurement of change, and is inextricably linked to space, so stopping time stops change of any kind. You wouldn’t be able to move even so little as a falling speck of dust from its (now) absolute position in space. You wouldn’t be able to move, and consequently even breathe, since your diaphragm has to change position for respiration to happen (nevermind the fact that matter can no longer be moved anyway, so air is now fixed in place.) Stopping time stops you, completely.
But since we’re talking about imaginary powers, if I could stop time, I wouldn’t even bother with anything in this multiverse, I’d just walk over to explore a different one a few trillion multiverses away. After all, I’d get there in no time.