you can see in action here https://www.grafiwebart.it/ ,everythings goes fine becuase my website speed is about 2.2 seconds eccept for the gtmetrix scan, the report sayd that I have to optimize some png but i cannot find them . Anyone have an idea about how could i change this png? another good news is that i have score A related to privacy impact score, you can test your website here https://webcookies.org.
If you are referring to the big cookie box that would annoy 99% of visitors in my opinion, completely stupid way to display it.
As for speed testing the Google site gives good results https://testmysite.withgoogle.com/intl/en-gb