[Elecraft] Time Syncronization

[krug261 at yahoo.com]

After 15 years away from radio, I'm back, and want to enter the digital modes. (How things have changed!) There is much opinion that a computer's onboard time system (Win 10 for me) is inadequate for digital, e.g., the WSJT-X user manual. So...
1. Is this a correct assumption in all/most cases?
2. Assuming you do feel it's necessary, which synchronization program would you suggest? Considerations: ease of installation, ease of operation (fully behind the scenes transparent?), least "invasive", etc.
Thanks.Bob, KA2TQVKX3 #9842