In the book Treason, the author explores that a tad: a character can make a time bubble around them, effectively freezing others. At one point, the character is being choked, freezes time, opens the assailant's hands and ducks out. When the bubble pops, in the frame of reference for the assailant, his hands moved too fast, shattering bone and destroying tissue. Read that decades ago as a kid and it was illuminating on the practical problems of time alteration