I understand it might take some time to load EZKeys2 once (first time) but I am not sure why it have to load it from disk for each new instance (each track with EZKeys2) if the software and sound libraries already are in memory . To me it seems that it loads from disk for each new track that uses EZKeys2. Also some users does not experience any significant load time at all. It would be interesting to how the those configurations differ.
Or maybe it is something else that hangs it also take very long time closing SO when having several tracks with EZKeys2.