Hello,
I've been using Kontakt 7 for a bit and, aside from the libraries pane not working, it's been fine. However, I noticed the interface gets laggy if a complex instrument is loaded, and gets laggier the more complex the instrument is. I'm not sure whether it's the number of ui elements declared in the script or something else, but thought I'd start this thread anyway in case someone else has the same issue.
I will try building the latest WINE soon to see if it makes any difference. I currently use Fedora 37, PlayonLinux and patrickl's WINE coprs https://copr.fedorainfracloud.org/coprs/patrickl/