Apple Event: May 7th at 7 am PT

Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

Lagging desktops on BigSur

I recently updated to BigSur and I've noticed that ever since that, whenever I try to flip current screen using 4-fingers left/right swipe, it takes around 1-2 seconds for my Mac to process that during which Mac is not responsive.


4-finger swipe up (show apps on current desktop) works as a charm - no lags



MacBook Air 13″, macOS 11.0

Posted on Nov 29, 2020 1:07 PM

Reply
Question marked as Best reply

Posted on Nov 29, 2020 1:28 PM

Boot into Safe Mode by booting with the Shift key held down and check there to see if the problem persists.  Reboot normally and test again.


NOTE: Safe Mode boot can take up to 10 minutes as it's doing the following; 

• Verifies your startup disk and attempts to repair directory issues, if needed

• Loads only required kernel extensions (prevents 3rd party kernel/extensions from loading)

• Prevents Startup Items and Login Items from opening automatically

• Disables user-installed fonts 

• Deletes font caches, kernel cache, and other system cache files


4 replies
Question marked as Best reply

Nov 29, 2020 1:28 PM in response to leszek96

Boot into Safe Mode by booting with the Shift key held down and check there to see if the problem persists.  Reboot normally and test again.


NOTE: Safe Mode boot can take up to 10 minutes as it's doing the following; 

• Verifies your startup disk and attempts to repair directory issues, if needed

• Loads only required kernel extensions (prevents 3rd party kernel/extensions from loading)

• Prevents Startup Items and Login Items from opening automatically

• Disables user-installed fonts 

• Deletes font caches, kernel cache, and other system cache files


Dec 8, 2020 9:57 AM in response to leszek96

Download and run Etrecheck. Etrecheck is a diagnostic tool that was developed by one of the most respected users here in the ASC and recommended by Apple Support  to provide a snapshot of the system and help identify the more obvious culprits that can adversely affect a Mac's performance.


Copy the report



and use the Additional Text button to include the report in your reply.



IMPORTANT: ⬇︎ ⬇︎ ⬇︎

Before running Etrecheck assign Full Disk Access to Etrecheck in the Etrecheck's Privacy preference pane so that it can get additional information from the Console and log files for the report:


Also click and read the About info to further permit full disk access.



Then we can examine the report and see if we can determine what might be causing the problem.

Lagging desktops on BigSur

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple ID.