@superkoshej613
I have found a solution to my problem:
In the Opera installation directory there is in the folder
"Profile" => "Data" a file called "History".
Make a copy of the file "History" (backup) and open
the original file "History" with an editor.
Delete everything in this file and save it, so that you now have an empty file.
Now just start Opera and test it.
For me the browsing history is now normal fast again.
I mean it is even faster than before.
I wonder that the file "History" contains entries and surfing traces, although you have deleted the history (everything) (?)
Dear Dev's, why is this?