Performance issues on Tumbleweed

[Jason Bailey]

My KMail2 setup on my Tumbleweed install is extremely slow to the point where 
selecting a message means a 15-20 second wait before any results show. I was 
reading various bits across the web that some people with large volumes of 
email like me find some benefit in switching from the default backend of MySQL 
to PostgreSQL. I'd like to give it a try but I don't know how to do that.

I'm running the latest SUSE Tumbleweed on a Dell Optiplex 7070. I don't see a 
postgres package for Akonadi when I search so does that mean PostgreSQL is not 
an option for me?

I did see a doc on userbase.kde.org referenced by a few forum posts but it 
didn't really answer my question. Could one of you put me in the right 
direction? If wiping out my local KMail config and rebuilding on postgres is 
easier, I'm okay with that -- all my mail is server side, so I'm not afraid of 
losing anything.

Thanks!!