Twitter Very Slow Loading in Safari

Are you running any anti - virus programs? Using a VPN?

Try setting up another admin user account in System Preferences/Users & Groups to see if the same problem continues. Please post back on whether or not this worked. Also try the Safe Mode. Please post back on whether or not this worked.

Isolating an issue by using another user account    

Safe Mode - About.       

If it works in the Safe Mode, try running this program when booted normally and then copy and paste the output in a reply. The program was created by Etresoft, a frequent contributor.  Please use copy and paste as screen shots can be hard to read. Click “Share Report” button in the toolbar, select “Copy to Clipboard” and then paste into a reply. This will show what is running on your computer. No personal information is shown. If the log won’t post, try posting it in Pastebin and provide a link in a reply. After pasting the report in a PasteBin page, go to the top of the page, and copy the address in the URL bar. Paste that in a new reply.        Pastebin.    

Etrecheck – System Information.      

Web site version if required.  https://etrecheck.com

Safari/Preferences/Advanced - enable the Develop menu, then go there and Empty Caches. Quit/reopen Safari and test. Then try Safari/History/Show History and delete all history items.  Quit/reopen Safari and test. You can also try try Safari/Clear History…. The down side is it clears all cookies. Doing this may cause some sites to no longer recognize your computer as one that has visited the web site.  Try disabling the Safari extensions.

I have this issue as well. When it finally loads twitter after 2-5 minutes, it’s so sluggish that all media fails to render. Safari 13.1.1 on MacOS 10.15.5, had the issue for months. All other websites load normally whilst Twitter is crawling.

You are welcome. Try disabling/uninstalling the Cisco VPN. Also try disabling the Safari extensions. See if that helps before doing anything else.

Look in the hard drive level Library extensions folder.

I have this problem also. The only two sites it affects for me are - Microsoft Live (Hotmail) and Twitter.

It happens on both my macs. The only extension I have is Cisco WebEx but disabling/uninstalling that makes no difference. No ad blockers. The same pages load instantly in Chrome.

Same here, pretty basic configuration no VPN, no antivirus and the websites I normally use load just fine.

Same issue. I have ExpressVPN, but I have that turned off and after upgrading OS X twitter just crawls. I timed it today and it took 4 minutes to load. I have gigabit ethernet.