We have a mix of Outlook 2010 and 2013 clients. When a user updates a shared calendar that all users have access too, we see the Outlook client freeze (hour glass cursor) for 15 to 45 seconds before return to normal operation. Exchange is 2013 CU 12.
We recently replaced the firm's legacy shared calendar which had 60,000 items in it, with a new blank calendar, but are still seeing the same issue. Any recommendation would be appreciated.
Thank you