Could you please describe me how you create your ISO, especially with your updates !
i normally use a windows 7 x64 professional N version.
i install it on a virtaul machine and each if windows updates are available. than i search the kbXXXXX update via google and download it.
itegrate it with wintoolkit.
install again in virtual machine, and look again if updates are available.
an so on.
this works for me, and winreducer never freezes for me this way.
by the way:
i experienced 2 different freezes.
1. winreducer stops at a component ( i.e at a "sound" component, i dont now which exactly) and after maybe 10 minutes it goes on. (Happens also with my Pro N version)
2. on i.e Games > Chess (like i tried yesterday) it stops for 40minues ++++ (and i cloese winreducer, some time ago it stoped and i got to bed, and it was still at this component after waking up) <-- happens only with the ultimate version for me
windows 7 x64 ultimate (updates till february):
i dont know how the updates are exactly integrated (i got it as iso from my workplace together with my notebook)
i would suggest they integrated it via DISM