Safari 15 is very slow

[radogado]

After years of top performance, Safari 15 is much slower to render than either Safari 14 or Chrome. Anyone else noticed it? Shocking to a full time Safari user. Here are two examples (watch in 60 fps)

 

[par1hsharma]

yes Safari 15 is quite slow as compared to previous version , being a full time safari user it is very disappointing .I dont want to shift to chrome but I'll have to if the performance remains the same .

 

[ponzicoinbro]

After years of top performance, Safari 15 is much slower to render than either Safari 14 or Chrome. Anyone else noticed it? Shocking to a full time Safari user. Here are two examples (watch in 60 fps)

I visited the site above and I don’t see the same problem. Scrolling was very fast on Intel and M1 MacBook Pro. Faster than you Safari and Chrome examples.

 

[n-evo]

I don't experience the problem either at rado.bg with Safari 15. 2017 MacBook Pro here.

 

[james948]

It's been incredibly slow for me I think since Beta 5.
I keep thinking it must be relay turned on but it's not.
Hoping it gets better. Even typing in this field there is LOTS of lag.

 

[Red Menace]

I don’t need YouTube to notice, this POS starts out being jerky on regular pages and eventually becomes almost unusable unless periodically restarted. The performance is the worst I’ve seen in years - Safari 14 was never this bad.

 

[foxs]

Very slow on m1 mac for me too. Before, Safari 14 was a dream!

 

[blackxacto]

Safari 15 is SLOWWWWWWW in Big Sur 11.6 on a 19,1 iMac. I go to different web sites at different speeds. Sometimes it takes a couple minutes to get there. Anyone hear of a correction for this?

 

[ponzicoinbro]

Not seeing any real difference in speed. Maybe half a second. Heh.

There are some bugs but that’s what I expect from a new release of any software.

 

[AussieMick2323]

After years of top performance, Safari 15 is much slower to render than either Safari 14 or Chrome. Anyone else noticed it? Shocking to a full time Safari user. Here are two examples (watch in 60 fps)

I have found Safari 15.0 to be extremely slow, I am running Big Sur version 11.6 I always use Safari but I may have to switch to another browser until this issue is sorted out.

 

[blackxacto]

I’m finding that there is hesitation when going to some websites. iOS15 Safari seems to periodically freeze.

 

[400]

Safari and Prview are an absolute dogs dinner at the mo. Slow, stalling, etc. Report sent.
Firefox is OK.

 

[jasoncarle]

Safari on Beta 9 is faster than Firefox for me.

 

[james948]

This ended up being adguard for me. Removed and it's working fine. I'd paused it.

 

[geez66]

Safari 15.1 very slow on sites where you have to login. All other sites fine.

 

[the Otter]

Yep! Safari 15.0 (16612.1.29 41.4, 16612) is horrible. I’m running macOS Big Sur 11.6 on an eight-month-old MacBook Pro 16,1 with a 2.6-GHz 6-core i7 and 32GB RAM. It starts out fine, but the longer it’s open, the slower it gets, to the point where the cursor stops and jumps and stops and jumps in every open application. Quitting Safari resolves the problem, at which point I restart it and use it until it decides to slow everything down again.

Since I’m still well within my warranty, I’ve called  about this multiple times. While I generally love their support, on this particular issue, it’s been just as bad as Safari 15 itself: they just tell me to reset the NVRAM, reset the SMC, reinstall macOS Big Sur. I’ve done all of this, after which everything ran beautifully—and then I noticed that the default install included Safari 14. When Safari 15 came up in Software Update, I ignored it; but a few nights later, Big Sur decided to install it while I slept, and now I’m right back where I started. Now they want me to try it with a new user and/or in Safe Mode, which is all well and good, but I do have a full-time job that kind of needs the stuff in my account (e.g. contacts, email, chat accounts, bookmarks/browsing history, etc.).

Bad show, Apple. Please give us a decent Safari 15.1 ASAP!

 

[Mercury7]

Safari is sooo slow I just had to switch to Firefox…. To bad, I always liked it… hope they fix it soon

 

[brsilb]

I agree. Using MS Edge

 

[Mercury7]

I agree. Using MS Edge

I may try that..I have it on a windows laptop and liked it

 

[Mercury7]

The latest update may have resolved some stuff, safari acting better today

 

[400]

It is a bit better but after a short while all the bugs creep back in. And I have deleted all the blockers and disable snitch, disabled the privacy setting. What with the issues setting up the new M1 and this beta, sorely tempted elsewhere if it were not for the other OS. (I understand you take a punt on beta, user beware, awaits general release to see what is what and won't be doing it again for the first time in a ages).

 

[kundanno]

Could it be slow because of Private Relay? It seems that it is slow in resolving sites.

 

[makima]

same here, currently using MS Edge which turns out being pretty decent

 

[Mercury7]

Guessing the things that slowed down safari are the features that I want…. So just hoping they refine it…. Probably will keep it as default for now, however when it has issues I do have edge downloaded now…. Options are good

 

[03294ujwperok]

This ended up being adguard for me. Removed and it's working fine. I'd paused it.

Thanks for the hint! Disabling AdGuard solved it for me as well. Example: opening Google Docs with AdGuard active: 10s and 100% CPU load. With AdGuard disabled: 1s, 50% CPU load.

I don't remember that this was a problem with Safari 14 though.