Very strange crippling CPU errors

[Intransit]

I'm seeing this on two setups: Native 12.7 HD_OSX 10.12.2 / 11.3.2 HD_OSX 10.10.5 - Mac Pro 2012 12-Core 2.4GHz RAM 48GB

I updated Kontakt to 5.6.5 because Metro Ark won't load in anything else and I have all their horns loaded in my template. This session has almost no mixing plugs yet so mostly Kontakt for now. I'm getting stuck CPU spikes:

https://www.dropbox.com/s/qn9u0dugxh...rrors.png?dl=0

Even stranger the spike doesn't change even after making all Kontakts inactive and even stranger the red spikes continue even after the session is closed and I have to shutdown the computer to get the session to load without crashing.

Any ideas? In my 15+ years using PT I've never seen anything like this