Thanks a lot for your answers.
What slow down my connection was using a google user and all the things that it must sincronize.
I solved it browsing without google connection ( no sincronizing).
I connecto one time with my account to sincronize all my extensions, passwords, favourites.... and when I have them all, what I did was stop sincronization.
If you are interested, the addons that work better for me are the following:
1.- Lastpass, it's a must, I don't need to remember all the passwords I use .- I never know them, my default password is about 20 characters and one time I do this, is lastpass who generate passwords (20 characters, caps, numbers, symbols...)
2.- Faster web https://chrome.google.com/webstore/det ... cepjcmdnjg . I don't really know what it does, but it works for me.
3.- Full screen.- Some gonna tell me is stupid have an extension to do what F11 key can do, but some times when browsing I dont want to use keyboard, but mouse.
4.- Web Boost.- Web Boost - Wait Less, Browse Faster! The same as faster web, I dont know what it does, but it does... jajjaj
5.- BROWSEC VPN https://browsec.com/en/ Privacy the first.- You can use it or not, it depends the moment, your needs and what u want.
As I told, thanks a lot for your help. Have a nice day