Hi! 
Host computer
OS FreeBSD 11 Release
Processor Intel(R) Core(TM) i7-4790K CPU @ 4.00GHz (3997.77-MHz K8-class CPU)
real memory = 34359738368 (32768 MB)
avail memory = 33237377024 (31697 MB)
SSD x 2 - Samsung SSD 850 EVO 500GB EMT01B6Q (RAID Stripe - hardware)
Guest.
I install Windows 7 Pro and Ultimate versions under VM bhyve.
Start install Windows 7.
Copynig files very fast, one second!
Installation goes two - three hours on this stage "Expandeding Windows files..."
and three dots move... move... move... install don't freeze, vm bhyve work normal.
But two - three hours... 0% or 3,5,6 or 8%...
After install finish all working very quckly, excellent boot, reboot system, RDP, install program, work glass effect(Aero theme), sound, video and etc.
Another system Windows 8, 8.1, Windows Server system, CentOS, FreeBSD and etc.
No problem with long installation, 5 - 10 minutes.
May be who know, why install only Windows 7 is too long ?
With achi problem and installer old, may be this ?
What ideas ?

Host computer
OS FreeBSD 11 Release
Processor Intel(R) Core(TM) i7-4790K CPU @ 4.00GHz (3997.77-MHz K8-class CPU)
real memory = 34359738368 (32768 MB)
avail memory = 33237377024 (31697 MB)
SSD x 2 - Samsung SSD 850 EVO 500GB EMT01B6Q (RAID Stripe - hardware)
Guest.
I install Windows 7 Pro and Ultimate versions under VM bhyve.
Start install Windows 7.
Copynig files very fast, one second!
Installation goes two - three hours on this stage "Expandeding Windows files..."
and three dots move... move... move... install don't freeze, vm bhyve work normal.
But two - three hours... 0% or 3,5,6 or 8%...

After install finish all working very quckly, excellent boot, reboot system, RDP, install program, work glass effect(Aero theme), sound, video and etc.
Another system Windows 8, 8.1, Windows Server system, CentOS, FreeBSD and etc.
No problem with long installation, 5 - 10 minutes.
May be who know, why install only Windows 7 is too long ?
With achi problem and installer old, may be this ?
What ideas ?