I produce tours of 100-300 panos using Panotour pro
Maybe consider using krpano instead of Panotour

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Because of these local running problems, there is a new 'tour_testingserver' tool (for Windows and Mac) included in krpano since a few versions.
It's a very simple localhost server, it normally located in the tour folder and only need to be clicked/started once and the tour will automatically open the default browser of the user. No settings or interaction from the user required. And the server itself is very small, without any branding and can be also renamed in any way.
Maybe simply download krpano and try using the MAKE VTOUR droplet.
Best regards,
Klaus