Normally, Group Policy refreshes in the background every 90-120 minutes. gpupdate triggers a manual refresh. The /force switch adds a critical behavior: it from scratch, overwriting existing settings even if they haven't changed on the server.
/force is genuinely useful in specific scenarios: force gpupdate
Continuous forced updates strain Active Directory domain controllers. Normally, Group Policy refreshes in the background every
Furthermore, administrators should avoid creating scheduled tasks that run gpupdate /force every five minutes. Doing so places an unnecessary load on the Domain Controllers and the network. The 90-minute background refresh interval exists for a reason—it prevents the network from choking on policy traffic. force gpupdate