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Slow and laggy after big sur upgrade

I was able to upgrade my catalina 10.15.7 to big sur 11.0.1, the problem now is the machine becomes laggy and almost impossible to use sometime. for instance, when I play music on spotify, it produces strange noise sometimes indicating that it is freezing for a second at some point. Not sure how to troubleshoot this. Would accept any suggestions.

MacBook Pro 16″, macOS 11.0

Posted on Nov 16, 2020 6:37 AM

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Question marked as Top-ranking reply

Posted on Nov 16, 2020 6:44 AM

yakovmeister wrote:

I was able to upgrade my catalina 10.15.7 to big sur 11.0.1, the problem now is the machine becomes laggy and almost impossible to use sometime. for instance, when I play music on spotify, it produces strange noise sometimes indicating that it is freezing for a second at some point. Not sure how to troubleshoot this. Would accept any suggestions.


—Rebooting several times after an upgrade can sort anomalies.


—a SafeBoot https://support.apple.com/en-us/HT201262

Takes noticeable longer to get to the login screen, does a 5-15 minute disk repair before it fully boots up, and certain system caches get cleared and rebuilt, including dynamic loader cache, etc. Login and test. Reboot as normal and test as caches get rebuilt.


—Test issue in another user (or guest user) account  https://support.apple.com/en-us/HT204443



if no resolve you can re-install the macOS on top of your existing macOS

How to reinstall macOS from macOS Recovery - https://support.apple.com/en-us/HT204904



2 replies
Question marked as Top-ranking reply

Nov 16, 2020 6:44 AM in response to yakovmeister

yakovmeister wrote:

I was able to upgrade my catalina 10.15.7 to big sur 11.0.1, the problem now is the machine becomes laggy and almost impossible to use sometime. for instance, when I play music on spotify, it produces strange noise sometimes indicating that it is freezing for a second at some point. Not sure how to troubleshoot this. Would accept any suggestions.


—Rebooting several times after an upgrade can sort anomalies.


—a SafeBoot https://support.apple.com/en-us/HT201262

Takes noticeable longer to get to the login screen, does a 5-15 minute disk repair before it fully boots up, and certain system caches get cleared and rebuilt, including dynamic loader cache, etc. Login and test. Reboot as normal and test as caches get rebuilt.


—Test issue in another user (or guest user) account  https://support.apple.com/en-us/HT204443



if no resolve you can re-install the macOS on top of your existing macOS

How to reinstall macOS from macOS Recovery - https://support.apple.com/en-us/HT204904



Slow and laggy after big sur upgrade

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