Safari 14 extremely slow after download

Had this issue when upgrading to ios 14. I fixed mine by going to :

setting > safari > clear history and website data

Make sure you connection isn’t set to a VPN connection. I never set one up, however after the update and ap updates it was turned on.

I installed both Safari 14 and the latest security update running Mojave and had the same issue. Some pages not loading or crashing. Out of frustration I reinstalled my backup before the update and all is now stable.

I have the same situation on my MacBook Pro mid 2014 and Imac 27 Late 2015. I did everything to ensure that the culprit is not one of my machine. In fact, the reason on my machines is javascript in Safari 14, which should be much faster than in Safari 13, but makes everything extremely laggy and slow. When scrolling, you can see pictures loading slowly, often I see a white page without content, which is loading later. When I switch Javascript off, the problems are gone. I think Javascript is broken and we need an update.

What I did:

• delete cache and cookies
• boot in safe mode
• boot in secure start mode
• compare with chrome. Chrome is ultrafast
• Delete Java 8

I have no special software against viruses or VPN connections.

For me, there is no question, apple just did a very bad job in Safari 14

I've not experienced this on the iPhone, but I'm on a later model (X). I wonder though, if like in the desktop version some of the new privacy features; fact checking etc, is having a toll on the hardware. I'd suggest taking a look in your settings, switching these off and seeing that solves the performance issue.

I have got the exact same issue. Is there a way to downgrade. This update is terrible and really not apple like. It broke my macbook air early 2015. Browsing is not downright terrible, especially scrolling through web pages. Anyone has any insights on downgrading to older version or changing some settings to making this better?

iOs update 14 & 14.1 on my iPhone 7 also has resulted in Safari becoming defunct. I have cleared browsing history, reset servers and turned off my McAfee Mobile security - Safari is still extremely slow and to the point of non-functioning.

I'm having the same trouble Safari 14; I don't have Norton Safe installed. It's still awfully slow.

Hallo,

here you can see, how bad the scrolling behavior of Safari 14 is.

https://www.youtube.com/watch?v=cpnvesQmX7Q&t=2s

I don't use it anymore until this gets fixed

@nurul235 that's on iOS.

OP and others are experiencing this on MacOS.

Finally someone wrote about this.

I have something similar. It takes forever (Safari freezes for awhile) to add a page into a Bookmark or into a Reading List. Also when I go to Safari Preferences and switch between tabs it takes some time to do that.

https://www.loom.com/share/8b4560ca613a44e9911b768593e9a83b

I see the same behavior on both of my Macs (MBA13 early 2015 and MBP 15' 2019) that run latest Catalina.

On MBA13 I even tried to reinstall MacOs while kept all data but that didn't help.

What are those new extensions?

I tried to turn off all the extensions but I still see the problems.

(In my case Safari freezes when adding a page to Bookmarks or Reading List or switching between tabs in Safari Preferences panel)

I found this same issue with this update. In looking further, McAfee Security set up a VPN connection for my internet and it was not working so I deleted the VPN network, all is working now.

I managed to fix this by removing the new extensions that come with Safari.