VirtualBox is very slow when hosted on Windows 11 - HVCI
When you will try to use VirtualBox on Windows 11 you can notice that VM performance is very low.
One of the reason can be Windows Hypervisor-enforced Code Integrity (HVCI).
The easiest way to check if it active is via Settings > Update & Security > Windows Security > Device security > Core isolation details > Memory integrity.
To turn it off run cmd as privileged user:
bcdedit /set hypervisorlaunchtype off
and restart the system.
Be aware, that HVCI is turned on to improve system security - so turn if off only when you really need it.
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