Sadly, that one seems to be on vbox. Windows exposes an API that lets a VMM like virtualbox create vCPUs on top of Hyper-V (https://docs.microsoft.com/en-us/virtualization/api/hypervis...). VMWare workstation and QEMU have added support for it and it works quite well, very close to native. I know vbox did implement it, but it seems to work not nearly as well.

QEMU might work for your usecase though.