Safari on macOS Sierra freezes when I open some websites

[twetti]

Hello.

I have an issue with Safari on macOS Sierra. When I open some websites the browser freezes and I see rainbow-busy-cursor for about 5-10 sec. I remember only the two websites where this issue happening: www.fastmail.com and www.github.com.

I recorder the video of the issue. See here.

Can anyone help me to fix this issue.

macOS Sierra 10.12
10.0 Safari (Cache, cookies reseted. All the extensions are removed.)

...I noticed that when I open www.fastmail.com and www.github.com I see error:

Timeout during GET http://ocsp.digicert.com/MFYwVKADAgEAME0wSzBJMAkGBSsOAwIaBQAEFEn0vYoYv3YGmMXeQC1oO3Fq5OaGBBQ901Cl1qCt7vNKYApl0yHU+PjWDwIQC/20CQrXteZAwwsWyVKaJw==.​

in the Console.app

...
Apple support said that their engineers have been working on this issue.

 

[algomusic]

I had a similar problem with Safari hanging my machine after the Sierra update. Hard reboot required. I have moved to Chrome for now.

 

[mgkimsal]

i suspect it's to do with user/password fields and keychain/autofill password stuff. I only notice it on pages/screen that have that, and... there's nothing I can do about it - just hangs. I seem to remember a *slight* delay in elcap, but it's insane in sierra.