even with vibe, a yoyo will generally sleep for longer than 20 seconds with a good throw. Which by that, I’m implying it’s the throw, not the yo. as others have said, record a video of the problem. Defects with yoyos do happen, but it’s rare. especially with a yoyo that’s injection molded.
Are the metal rings on it flush with the rest of the yoyo? I remember them starting to separate from the plastic occasionally happening with my phenomizm.