2.1 is a step back

It’s 3 times slower to load the editor and and slower after edit as well.
It converts nbsp to blanks and then shows little squares. The wysiwyg editor was rubbish – so I used the code version only in 2.06 and the wysiwyg ist still rubbish in my view.
I am very disappointed.
Have to go back to 2.06 and reinstall all the pages I made. Cost’s me hours for nothing.
The most important function is missing: DOWNGRADE.PHP