JoFo
This is a really good list of dos and don'ts. The one I fell foul of is
Always use a fresh... Zorro Installation
My Z12 didn't do well until I did a complete uninstall and reinstall. Then I simply launched the system, and the results have been much better.
I'd add that it seems to be best to run the Z systems separately in their own discreet, separate subdirectories.