Kontakt CPU load

Hello everyone,

Have you an idea about if the use one instance of kontakt 5 (64-out) in a rack with only 8 stereo out will consume more CPU than one instance of Kontakt 5 (16-out) with 8 stereo out ??
I am asking this because sometime I open one instance of Kontakt (16-out) in a rack but then I figure that I will need more than 8 stereo out so I have to start from the begining with a 64-out to get more than 8 stereo out.
I don’t know if I open instances of Kontakt (64-out) by default even if a won’t use more than 8 stereo track will weigh down Cubase and my project??

Thanks for any advices.

Best regards,