tmp just in case I regret this later!) as shown below for info. I used the above fix and now all OK.! As you can see it blew away a bunch of *.plist files (saved them in. I've been having a very similar problem, especially after logout/login or reboot MS Outlook for Mac (v16.7 running on MacOS 10.12.6) would hog CPU > 400% and run VERY slow for HOURS until it would eventually settle down.
