CoreBOSBB

Certbot provides a certify for make a https site

There a excelent solution, and has a free certify for 90 days, in  https://certbot.eff.org/

System works, but very slow in dashboard, and new pages, for example

And in browser chrome, is necessary, time to time, flush sockets with a chrome://net-internals/#sockets

How I can solve thats issues?

Compare their service with https://letsencrypt.org/ and share your findings

I would recommend you wait for a while, for the service worker to completely load, then the issue should disappear.

yes CertBot is this product ...

I forced keep alive connections, and this problem not occurs anymore

thanks for sharing!