Window 10 downloaded overnight and I am currently in the process...

Window 10 downloaded overnight and I am currently in the process of installing it and bedding things down.
So far the process has been almost seamless.
Most things are working as they should - but VERY SLOWLY.
I am going to get rid of Cortana.
I have made Chrome my default search engine and I hope that is the last time I have to tell window 10? How many times do you have to tell them??
I have had to reset passwords that worked before.
Settings have changed that they said would not.

Anyway - back to the skirmish lines!!