Internet time adjustment details on Windows

How does Internet Time (without Active Directory) make adjustments to the clock? If it checks every week, and sees that the system clock is running fast, does it immediately change the clock, which I would think would be disastrous if comparing timestamps, since there would be an overlap. Would make more sense to slow the clock down until it’s caught up with real time. If it works that way, are there configurations like for Windows Time Service (for AD)? Thanks.