Although I didn't have any crash so far with my Kontakt instances, I noticed that they seem to not be working once I reload a project file. The first time they work fine, it's only after reloading it that the issue starts - that said, it's not on every instance and/or instrument, which is really weird...
Same here on EW Opus. Also happens when disable/enabling. Sometimes Opus makes a project crash on re-loading. (VST2 version working normally).
I'm reading reports that VE Pro is sending out blanket zero values on all CCs on a reload / enable of a VST3. That would likely explain a lot of the problems.