GitHub is painfully slow on Safari (macOS Sierra 10.12)

Question

After update to macOS Sierra 10.12, It became impossible to use GitHub.

Safari acts painfully slow on that. I've tried to clean cache with CleanMyMac 3, removed all extension (not disabled), and disabled all plugins for GitHub website (I actually have only 2 of them: Unity Plater and Adobe Manage).

Google does not give me any hints on what can be the problem? Any thoughts?

Answer 1

It's not about Apple or Github. All simple — roskomnadzor has blocked digicert's verification service ocsp.digicert.com. I believe you're from Russia that's why you're facing that issue.

There are several ways to solve that issue:

1. Use Chrome/Firefox/Any you want
2. Turn of SSL verification in Safari
3. Update your /etc/hosts with the next line: 72.21.91.29 ocsp.digicert.com

I choose last one. Now all working fust fine.

You could find details here and here Links only in russian.