My task manager is full of duplicates running and they cannot be closed?

For the past week, this laptop has been super slow. Loading any kind of web page takes a while.
I have a good connection.
Menu items also do not snap open fast as they used to do.

Is stuff running interfering with the response?
Sometimes clicking on an open tab shows a black screen for several seconds before it shows text again, it never used to do that.

Opening the snipping tool can take 3 seconds...

Disable Ubisoft, see if it makes a difference.
Check your Graphics drivers are up to date, are two things you can try.