Latency with Kontakt and Logic Pro

Hi, I just bought midi guitar 2. I’ve tried using my guitar sounds in Kontakt 8 but there is a lot of latency, no matter if I change the buffer size or add low latency monitor. I want the great acoustic sounds because I have muscle issues and can’t play acoustic guitar. Playing and electric with access to the great sounds in Kontakt would be great. Can anyone give me advice on how to make Kontakt work without latency? Thanks!