@ William & Lukasz: As far as I know this has *NOT* been resolved. Performance still seems to remain the same as when I posted this thread.
@steffenR: Yes, that could be one solution. Essentially you wouldn't use Views to display your custom content created through Types / CRED.
Problem with going that route is you lose the useful functionality built into Views such as sorting, search, and pagination.
If you do go about coding custom templates, please post them here for others to see, and maybe the dev's can get some more ideas on how to reduce the MySQL load in Views.