OSX 10.10.5 Yosemite

MS Office 2011

18 Gb Memory

Recently applied the 14.5.4 MS Office for Mac Update and should not have.

For the first time:

Getting beachball. When creating messages getting slow-to-catch up typing.

Using Activity Monitor, I can see wild swings up to 90 percent of CPU.

My inboxes hold only a few messages, deleted items are few.

I've compacted and rebuilt database.

I have many saved messages but only "On My Computer," however.

But....when I select, "Work Offline," and even create a message offline, CPU drops to 1.9% and stays there.

Is this the only way to control out-of-control Outlook 2011?

I need to know how to shut down the new, incessant "calling home" that Outlook is now doing, screwing up my Mac Pro. There must be settings somewhere and I can't believe I'm alone with this problem.