Deleting and recreating a personal search seems to have cleared the issue.  

And just as suddenly as it started, it got better. The performance returned to normal between the last time I tried anything last night and the first ...

It worked perfectly in my test instance that already had the stock 1.17 installed and OAuth working.  I'll upgrade production this weekend. ...

Good to hear that there will be an Awesome version in the next week.  I have a plain test version working with OAuth.  I could test there if...

I sent an inquiry about when we can expect a new release atIf they provide an answer, I'll post it here.  

Looks like it took about 4 hours after I followed the instructions at

Stephen, MS seems to have killed IMAP for our org.  I've gone through the process to re-enable basic authentication.  How long did it take ...