how to set free nodes to move them smoothly?

hello to all, please,  how can I move a node freely? In the past cdr versions was easy to drag a node in fine movements, but my X5 version when I click to move a node it's something like blocked to make a fine move, it jumps to milimeters of distance the first move it's hard to make a fine movement, I just can do that if I  get close in a big zoom, but doing that all the rest of graphics are out of view, how can I make a fine setting to movement a node?