@Hungaristen
Yes Kore has some things to take in account. (use it myself). Kore has no multicore support. If you run everything in one Kore it will all be loaded on one cpu core so if you have a 4 core cpu use at least 4 Kores too (or one for each sound) Plus. Kore is inefficient itself cpu wise. If you use a massive sound for example in Kore, it will have more cpu useage if you use the patch in Kore then just the massive plugin. Plus that way (using for example 2 Kores, 2 massives and 2 absynths etc) the multicore usage of cubase is better then in less instances. Memory use might be slightly higher but not much.
Hope this helps
Vincent