I heard (right or wrongly) that Cubase uses one core per instance of the Kontakt VST in the rack.
I am on an Intel 5820 with 6 cores, 12 threads. 32 gigs of RAM.
I am creating a very large template with full orchestras and more.
Would it be best to load fewer Kontakts, with more instruments, or more Kontakts with few instances - assuming the same number of sounds?