Poor performance when using <ph conkeyref="vbox-conkeyref-phrases/product-name"/> and <b outputclass="bold">Hyper-V</b> on the same host

Details: and Hyper-V can conflict with each other when run on the same host.
Always disable Hyper-V when running VirtualBox.
Workaround: Turn off the Windows features Hyper-V Platform, Virtual Machine Platform and Windows Hypervisor Platform, and then reboot the host.

On newer Windows versions, the device security features Core Isolation and Memory Integrity use Hyper-V, even if you have turned it off.

Use the Microsoft Device Guard and Credential Guard hardware readiness tools to turn off more features that use Hyper-V. For example, to disable AutoReboot, use the following command:

.\DG_Readiness_Tool_vX.X.ps1 -Disable -AutoReboot

Disabling Device Guard and Credential Guard features impacts on the overall security of the host. Take this into account before deciding to disable them.