Every click = 10 second wait + turn off new sorting

I'm not liking the new update at all, it now takes 10 seconds to do anything, when searching in the hierarchy it takes about 10 - 20 seconds to type a letter, selecting something in the scene... another 10 - 15 second wait. you can't type out the whole word really fast either because it doesn't input so it takes up-to a minute just to type a word.

Also the new sorting... how do I sort by name instead of this new fangled sorting since all my things are now all over the place randomly which makes it a nightmare looking for anything?

Deleting a number of objects makes Unity crash with "This program has stopped working". This update feels a lot less stable.

Selecting anything from the 3D scene view produces a "readOk
UnityEditor.DockArea:OnGUI()" error in the console. This version doesn't even feel like a complete game engine