Maybe, some will find this interesting.

I am running Windows 10 on a 2 processor, 4GB RAM, VM

Host is i7 w/ 8GB RAM.

Boot after entering P/W is basically instant.
General operation speed is mostly a matter of can I click fast enough to keep pace w/ it, as in WHOOOOSH!

Anyway, here's the interesting tidbit...
Run an Internet connection speed test & the results are, slightly, higher for both Download & Upload spds on the Win 10 VM than for the 8.1 Host machine.

Windows 10OS.jpg