Safari 14 on Big Sur: How to prevent a webpage from automatically reloading because it was using significant memory?

In previous versions of Safari, only a message banner would pop up informing me that a webpage was taking up significant memory. Under Safari 14, the browser now automatically reloads the webpage without my permission, and there seems to be no way to turn this function off.


I am unable to pause lectures, type notes in another app, and then return to play the recorded lecture without the webpage reloading, causing me to lose my place in the lecture. For my purposes, Safari has become unusable because of this new, automatic reloading. I preferred a message banner appearing on top of the webpage so I could reload at my convenience.


Is there a fix that I can do through Terminal to turn this function off? What can I do?

MacBook Pro 13″, macOS 11.0

Posted on Nov 14, 2020 4:15 PM

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Posted on Mar 4, 2021 1:02 PM

I had the same problem when watching Disney+ I tried a few different things but finally seemed to have stopped it happening.

I monitored the memory use of the Disney+ tab in Activity monitor.


Under safari > Settings for this website - I turned off "Content Blockers"

I am running Ghostry Lite - so I "Trusted the site"

I am running AdBlock - so I added www.disneyplus.com to the sites allowed to show Ads.


If I do the above and play Disney+ in a separate window the memory usage fluctuates but doesn't grow like it used to. Previously I would get the warning when the tab used around 2.0GB memory. Now it stays between 650Mb-850Mb





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198 replies

Dec 3, 2020 11:19 AM in response to sam9502

I'm having the same issues and it's so annoying. I'm not even switching tabs for this to happen. I'm attempting to do drivers ed and take notes at the same time with the side by side display. There's a timer that makes sure you watch the whole lesson video before moving on, and the page keeps reloading and reseting it. I've been stuck on the same half an hour video for a while now.

Jan 2, 2021 2:57 PM in response to M1User_sandy

Virtual Machines are quite a different issue, M1User_sandy.


In fact, since the M1 architecture is completely unrelated to the Intel architecture, trying to run Intel based Virtual Machines is a long expected “no go”.


If Intel based Virtual Machines are important to you, then the M1 architecture is not for you, at least for now. (Even in the future, Intel based Virtual Machines would be run in emulation. Not a desirable approach, usually.)

Jan 16, 2021 11:47 AM in response to sam9502

I have the same problem. I'm writing a very long novel in Google Docs and while the "this webpage is using significant memory" popup has been annoying for a while, it just started doing the reloading bit to me - thankfully my progress had already saved, but to get booted to the top of a several hundred page document is frustrating. I know the page is using significant memory, it's the only thing I'm using it for, and I don't want it reloaded. I'd do just about anything to be able to turn this infuriating "feature" off.

Feb 2, 2021 8:02 AM in response to sam9502

I have this issue too. I'm watching a video in Safari, and it just refreshes without my permission. I have nothing else except Safari turned on, and I have a 16 GB 2020 M1 Pro, so that can't be the issue. Something is just not working at the moment, I hope Apple is aware of this problem and we're getting an option to disable automatic refreshes or something like that soon! :)

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Safari 14 on Big Sur: How to prevent a webpage from automatically reloading because it was using significant memory?

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