There’s a big difference between KK and Kontakt (and Player). This, and audio usage by plugins in various states, have been discussed widely in the Community. Having a search and read is well worth the time and effort IMO. If there is something more specific on the reasons why you have to use KK you could further refine your question. Anyway, below are a couple of links on KKvsK and plugin format behavior that might be interesting/useful. And at the end of the day GP offers so many tools and possibilities to manage resource usage it’s almost certain you can find a solution for any given problem.