Reason being, your Windows clients will sync with the current time on the Domain Controller, but if that is drifting due to RTC issues, it won't get corrected until the next external sync.

According to Microsoft If the virtual machine's clock is running fast, then the Hyper-V Time Synchronization Service will bring the clock back into sync with the Hyper-V server.

I'm having trouble getting the computers in my domain to be syncronized with the DC. Some of them are acurately synced while others are not. I've tried implementing a GPO to force them all to use ...

There are two ways to set the Time automatically on Windows 11/10. You can use Windows Settings or the Registry Editor for this purpose.

Repairing the automated time syncing system in Windows 11 requires a deep dive into the Control Panel and perhaps access to the command prompt.