Time is measured and defined by change. A ticking clock, a vibrating atom etc.
If all motion stopped at all levels, sub-atomic to across our universe, there can be no observer within our universe who thinks it has stopped because observing requires change. It would require a meta observer with their own changing world. If the motion in our universe started again, no one within it would ever know it stopped.
So essentially, at the the largest scale possible ie across all multiverses and dimensions etc (if they even exist), it is meaningless to consider that everything stops moving, because we only measure time in terms of the way things change.
The arrow of time is defined by the direction of entropy and a simple indication of this is that at any scale above microscopic, heat disperses. And similarly, we don't find ambient heat spontaneously concentrating into a small sustained region. Even something as small as a ball has many things going on inside it, and these things will always agree with the rest of the world about which way the arrow of time is pointing.
Start with a ball resting on a floor. If you did find such a ball that spontaneously gathered heat (atomic vibrations) from the floor and then all the motion of its atoms suddenly synchronized such that it compressed its downward surface, then went back to random vibrations such that the ball relaxed and sprung two meters into the air, ie the same as running "the movie" backwards at atomic and human scales, then you would have a claim on it going backward in time.