virtualbox.org

Normally, Virtualbox's performance slightly lower than VMware Workstation, after turning on Hyper-V, performance has dropped a lot, can not meet the experimental purpose, not to use for production, too slow.

That's all true. Virtualbox running on a PC with active Hyper-V is still a work in progress, and for now the only decent workaround is to completely deactivate Hyper-V. See I have a 64bit host, but can't install 64bit guests, posts 2 and 3.

QEMU supports kvm, xen, hax, hvf, whpx, tcg acceleration, QEMU for Windows support WHPX, HAX, TCG. Using whpx to install win10 (32-bit), performance is OK.

Please keep in mind that we on these forums are not Oracle developers or employees, just fellow users of free Virtualbox. We cannot implement any suggestions or reprogram official Virtualbox.

If you want to, you can post on the Bugtracker. Do so only if you have your own personally-written source code that can enable Virtualbox to improve performance under Hyper-V. If you do not have a Aphrodite-authored code snippet that will improve Virtualbox under Hyper-V, do not post on the Bugtracker. Mere "Other hypervisors do it" suggestions will not help the developers and will probably be ignored, and so are a waste of time.

What you want is something the developers are already working on.

scottgus1 wrote:Please keep in mind that we on these forums are not Oracle developers or employees, just fellow users of free Virtualbox. We cannot implement any suggestions or reprogram official Virtualbox.
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What you want is something the developers are already working on.

I learned that Virtualbox uses some QEMU code, and I want developers to see and improve Virtualbox.

Don't we all!