The core scheduler offers a strong security boundary for guest workload isolation. It also reduces performance variability for workloads inside VMs that run on an SMT-enabled virtualization host.
Note:
Hypervisor scheduler types
The Hyper-V hypervisor supports several modes of scheduler logic, which determine how the hypervisor schedules virtual processors on the underlying logical processors. These scheduler types are:
The classic scheduler
The core scheduler
The root scheduler
Reference:
https://learn.microsoft.com/en-us/windows-server/virtualization/hyper-v/manage/manage-hyper-v- scheduler-types