I recently switched my Outlook on Mac 2011 to Outlook for Mac v 15.11.2. My work requires me to use a Surface Pro 3 with Windows 8.1. I changed primary email to outlook to better communicate with the company and customers. The look and feel of this new Office 365 upgrade melds the Mac devices and PC devices quite well. I was a Windows developer for 13 years way back when so I am used to the poor people management aspects of Windows and mostly work through Apple Contacts and BusyCal. This new Windows change looked like a dream, but since installing I get a beachball every single time I use it particularly adding contacts etc. I cannot believe it is this buggy. It was more or less an automatic install by Microsoft so I cannot see what I have done. I also have a VMware partition which connects to the company VPN with Windows and I changed both to Office 365 since I get 5 devices. I hate to pull the plug since I am in for the long haul. Can anyone help me?