horrible do not download

word press said they had an update and i had other updates as well so i updated all…now come to find out is says on a little side note “wordpress 4.5 beta 2 is now available this software is still in development, so we don’t recommend you run it on a production site. consider setting up a test site just to play with the new version. ” what in the world my site takes 5 minutes to load or doesn’t even load at all and i can’t even add a post! i can’t do anything as a administrator because it takes 10 minutes for the page to load or it doesn’t load at all and says “error establishing a database”