spinning beachball

I’ve come across topics with beachball appearing in Cubase 6 (using macbook pro 10.6.8) before, but could’t find answers or comments about my issue, so. .
I wonder why this beachball appears so often when I undertake actions (commands, even little ones like editing midi notes or moving to cursor).
It is frustrating not to be able to get along with my work and having to wait a few seconds each time.
Does anyone have the same experience as I have, and what could be the solution?

Try turning off auto save