Microsoft Office 2016 very slow to start up on iMac

Dears,

I'm using iMac its new recently brought, installed office 2016.
Each program of Microsoft Office 2016are very slow (around 1mins) to start up.I tried to uninstall Microsoft Office and reinstall it.
no previous version office has been installed on the computer before.

Do you know what to do to fix it?

Thank you
Ram Kumar ChellamSr. System AdministratorAsked:
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REITCommented:
Have you ensured office is fully updated?
Ram Kumar ChellamSr. System AdministratorAuthor Commented:
Yes, it's up to date...
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