Windows 10.qcow2 _best_

Qcow2 (QEMU Copy-On-Write version 2) is a popular disk image format for virtual machines, offering features like:

virsh snapshot-revert --domain Windows10 --snapshotname "BeforeDriverInstall" Windows 10.qcow2

Windows does not include native VirtIO drivers. During installation: Qcow2 (QEMU Copy-On-Write version 2) is a popular

Testing on NVMe SSD, 8 vCPUs, 8GB RAM: