So I've come across one issue while using the new AU3 template: even though VEP recognizes tempo info from LPX, my Kontakt instances do not. This is a big problem for libraries like Signal, Rise & Hit etc. Yes, "Ext" is selected in Kontakt's master pane. I haven't tested other tempo sync'd VSTs yet but I'd love for someone to see if they can replicate my issue.
The issue is not present when I connect to my VEP server with the regular stereo VEP plugin, so maybe it has something to do with MIDI clock only being sent over certain ports. At this point I'm in over my head.