Laggy Facebook (Safari)

I am the OP and found a partial fix. Right click on the URL window and select settings for this webpage and turn off auto play videos. This has made Facebook at least tolerable and scrolling is smoother though it still has small hiccups on occasion it's much better than it was.

The newest version of Safari is 13.1.1. You can check for an update in System Preferences/Software update.

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

Hi

I use Safari as my main web browser an it works fine face book was great then as soon as they updated the new Facebook the problems began, I could scroll through a couple of pages no problem but when I tried to wright a message the keyboard would work so slow its ridicules but when I went back to the old style of Facebook it worked perfectly could scroll down for hours an hours (I know hours an hours on Facebook book I need to get a life) no problem an no problem typing any messages everything working as normal but as soon as it went back to the new Facebook the problems happened again an ive done all the normal stuff an nothing works but if I open another tab on safari it works just fine any help to fix this would be amazing please excuse my spelling an grammar am dyslexic (Imagine someone who has problems with grammar an spelling trying desperately to spell dyslexic the person who named it this needs to have a word with themselves) many thanks Chris

I have the same issue since the latest Facebook. When scrolling I often see the spinning ball and if I am on for more than say 5 minutes it really starts to lag and typing into any field in Facebook is painfully slow. If I type a short 10 word sentence I have to wait about a minute after I type for it to finish. Before the new Facebook I kept getting "this web page is using too much memory" warnings.

iMac Retina 5K 40GB RAM 4.2 GHz i7

Safari 13.03

Mac OS 10.13.6 (can't upgrade further or I will lose use of my old Adobe software).

I continue to have this problem with OS Catalina 10.15.7. I also have display problems sometimes with the rightmost part of my FaceBook (only) browser cut off, so I can't see my notifications. It's been going on for months, since before the new FaceBook design.

I'm using Safari 14.0 on Mojave 10.14.6 on a flashed 2009 (2010 now) Mac Pro with a 3.33 GHz 6-core Intel Xeon, 48 GB of 1333 MHz DDR3 RAM and a Radeon RX 580 with 8 GB of RAM. That should be overkill for running Safari and it is. Except for Facebook.

I don't know what happened, but out of necessity, I've taken to using Opera when I go to Facebook. It is a clunky work-around, but it seems to be the only thing that lets me do what I want without bogging down, running into severe typing lag, unresponsive page scrolls, clicks, and the annoying message about the page using significant resources. Opera moves at near instant speed when I visit Facebook.

None of these problems occur on other sites. Just Facebook.

As an added note, I'm not running any ad-block extensions.

There is no reason I can think of that Facebook has such a negative effect on Safari, but it happens.

Wow so even 2020 MacBooks have the issue , I thought it was just mine being 2012 pro , can’t believe apple Santa solved the problem. To me feels like you have spyware running in the background on the pc days

I’m also experiencing the same issues with Facebook on Safari with my 2020 13-inch MacBook Pro. Intel i5 Quad-Core, 8GB of LDDR3 memory. Running MacOS Big Sur 11.0.1 and Safari 14.0.1. I REALLY hope this issue isn’t made intentionally by Apple to make us upgrade to their new M1 macs!

I'm facing the same issues here..

MacBook Pro 13" Early 2015, Core i5 with 16GB RAM..

Safari 14.0.1

MacOS Big Sur 11.0.1

I guess memory leak in Safari while open Facebook page..

No issues in other browser..

Apple please fix this issues soonest possible !

I have exact same issue with Safari after facebook updated the design. 2013 late macbook pro retina (Catalina).

I also get the warning "webpage use significant memory" after a while.

Apple please fix this.

I too have this same issue with Safari and Facebook as well as a few other sites. I'm on an i9 16" MacBook Pro with 16gb of RAM so the hardware definitely should not be the issue. Safari has some kind of awful memory leak it seems.

This isn't an apple issue. Facebook is not optimized for Safari. You'll also notice that you can't make Facebook Messenger video calls from safari. It prompts you to use a "supported browser" such as chrome. This is something Facebook needs to fix on their end.

Yup I just bought a brand new iMac at Costco yesterday, and made the big mistake of upgrading to Big Sur. Facebook and Facebook messenger were working fine before the upgrade, now they are both lagging and taking forever to load. I can't even get photos I attach in messenger to send. Very frustrated. I hope Apple works out these issues soon.

I had this "drag, lag, snag" since Catalina before Big Sur. I confirm that FB messenger is not accepting my photos I attach since I upgraded to Big Sur; however, it has not changed the poor performance in Facebook.