Virtualbox is slow

• Reference: https://forums.virtualbox.org/viewtopic.php?t=110953&start=15

1. Use Group Policy Editor (gpedit.exe) to completely disable Virtualization Based Security (VBS).
   • Disable Computer Configuration > Administrative Templates > System > Device Guard > Turn On Virtualization Based Security.
2. Open a Command Prompt using Run as Administrator and run the following commands:
   • bcdedit /set hypervisorlaunchtype off
   • bcdedit /set vsmlaunchtype Off
   • DISM /Online /Disable-Feature /FeatureName:Microsoft-Hyper-V
3. Use regedit.exe to set CredentialGuard Enable DWORD bit to 0
   • Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\DeviceGuard\Scenarios\CredentialGuard > Enabled > DWORD > 0
4. From Windows Features,
   • Uncheck Hyper-V.
   • Uncheck Windows Hypervisor Platform.