QEMU/KVM Guest unacceptable slow however having modern CPU?
Man, that was...
Trying to fluid run Windows 7 second day on QEMU/KVM Debian Bullseye host. Already enabled all kind hardware supports, tunned guest almost in any available for me possibility... But wtf, why on my brand new Ryzen 3700X guest OS works much worse than on my old i5-4570...
The last little thing was wrong in my VM definition: