Hi,
as discussion title says, often, also with just one patch loaded, kontakt make disk jump to 100%. How can I fix?
Which library or libraries, and what's your computer specs, particularly what sort of hard drives and how are they formatted?
Spitfire ones, above all. I've a windows 10, i7, with 12gb of ram ddr4. My libraries are located on an external drive NTFS of 2TB
Is that drive SSD or regular HDD?
It's a regular HDD
That's probably the cause of disk spiking. Try increasing the DFD buffer size globally (Options->Memory).