Big Sur Applications Loading Slow and Dock Bounce

Such a stupid reply. It is an official new version of an OS that has been tested throughout several betas for months.

Therefore it is a finished product and users should not have to be careful before installing it on their system.

Every system, even Catalina, is affected. 3rd party apps trying to auto-update. IT IS NOT YOU!

iMessage, Apple Pay, Maps too. You.Are.Innocent. And yes, it is really bad.

https://www.macrumors.com/2020/11/12/macos-big-sur-download-issues/

https://www.apple.com/support/systemstatus/

Thank you , same problem here ... Called twice for support and this did not help.

I purchased CleanmyMAC X

Ran the program ,

Discovered that I had program for my Tablet which did not respond and blocked the start up of my MAC : I disconnected my Tablet .

Then I ran 2 of the maintenance options offert in the Application:

• Run Maintenance script
• Flush DNS cache

Since , the machine runs like a dream

Well worth the $39 for CleanmyMAC X program.

Hope this will help .. I posted this few weeks ago

Good luck

I didn't even try the update and I'm having the same issue.

This is effecting users who aren't even attempting an update.

If I unplug the ethernet to my Mac Pro, everything boots up fast and normally.

As soon as I plug the ethernet back in, the whole computer is glacially slow.

Ditto. Attempted a failed install of Big Sur and now my Catalina MacBook Pro launches apps incredibly slowly. Given the developer site outage it sure seems like they call home on app launch or something similar. If this is true it's completely unacceptable.

I agree the person's response wasn't helpful to you - but for others it is a sensible statement that I hope makes people think twice before rolling out a new operating system across a business fleet all in one go, without testing, on the morning of it's release.

You might want to reconsider replying with a snarky answer that accomplishes nothing other than demonstrating your fragile ego. This is a released OS. Nothing to prevent anyone from potentially deploying it widely on multiple systems. That's why many of us actually do assume some risk and beta test things for Apple and other companies. When I weigh in on someone's tech problems, I actually try to address the issue, not berate that person for having the gumption to actually, like, update to a released OS. You might want to consider a humanity transplant.

More than likely, the system is rebuilding caches, indexing, and other background tasks. After a major upgrade, that is not uncommon, and can cause things to run slow for a while. Give it some time and see if it gets better.

WOW thanks Tim, so insightful. Crazy to think after spending thousands of dollars and committing the entirety of a business to Apple, you should expect it not to fail after months of beta. You’ve really cleared up this gentleman’s concerns.

This Big Sur is totally appalling. I have used iMACs for about 10 years and they have been excellent. The startup app' load speed is reminiscent of WindowsXP/7 (the reason I switched to Apple). The cap it all sometimes I have type 10 characters into safari before it even displays 1. Frankly doing this update was a big big mistake

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Yes my iMac 27-inch 2017 is now taking about 5 minutes to start up since upgrading to Big Sur and there is nothing active on login items. Before that, it used to take about 30 seconds to less than a minute.

Indeed my late 2015 iMac 21.5" 1 TB fusion Drive seems to be getting faster to start and I am booting from a filevault2 volume.

so it may be updating caches and optimizing the placement on he SSD part of my fusion drive.

Tim , I had the same problem , 4 minutes , 18 seconds to start my 2020 iMac 10 cores ...

I contacted Apple , but did not get the solution ..

I found the problem .. , I should say problemS .

1 - I discovered using Clean my Mac X that on program from my Wacom Tablet was not responding ... I unplugged the tablet

2 - Secondly , I flush my DNS Caches !!! using this method : https://www.tridevcomputer.com/post/how-to-flush-dns-cache-in-macos-big-sur-and-catalina

Now my iMac BIG SUR is loading quickly , also , I am using less CPU resources since I do not have the unresponsive application.

You may want to unplug all peripherals , do a DNS Caches flush ...

I wish you to be successful, I was so frustrated with the situation ..

Have a great week-end

Marcel

I am not a developer, nor an IT guru, just the CEO of a small (20 employee) boutique firm. I personally upgraded my iMac to Big Sur with great expectations, and we have all been let down. I waited until 11.1 to do the upgrade and have suffered from the incredibly slow loads, as well as time spent waiting for applications to function fully even after loaded. FYI, I have an iMac (Retina 5K, 27-inch, Late 2015).

I spent 90 minutes with a tech rep from Apple today and learned a lot. Cleaned up malware (that's on me), lots of other clutter the Big Sur doesn't do well with. You really need to be a Mac IT expert to go through the myriad of clean-up that we did -- thankfully. But the big aha discovery was that I learned that if you have a Fusion drive (which I do - 2.12 TB) that it further exacerbates the problem and you need to be really careful. If you are being told to reboot this, reboot that, by a lower level Apple Support person, I was told that you could absolutely burn out your drive if it is a Fusion drive. Big Sur does not evidently do well with a Fusion drive. I have no clue if this is true, but this is what I was told by a higher level Apple support person.

So be aware. And hopefully, Apple will realize how they have inconvenienced and disenfranchised some of us (I go back to the original Macintosh days :)) and they will try to resolve all of this. Otherwise, many of us now have obsolete hardware.

I hope that this is a helpful post from a non-tech person.

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