Hi, got my Macbook 16inch in October. Updated to Big Sur. Now every so often the fans go crazy and it gets super hot. The apps running on it aren't unusual. Activity monitor says Messages is using 338% of CPU, even when I'm not using the app that often.
Anyone else noticing their computer is overheating thanks to Big Sur update?
MacBook Pro with Touch Bar
Pat89TO wrote:
Hi, got my Macbook 16inch in October. Updated to Big Sur. Now every so often the fans go crazy and it gets super hot. The apps running on it aren't unusual. Activity monitor says Messages is using 338% of CPU, even when I'm not using the app that often.
Anyone else noticing their computer is overheating thanks to Big Sur update?
You can force quit Messages from your Activity Monitor by double clicking the process.
Sign out of Messages in iCloud.
Sign out of iCloud on your iPhone, iPad, iPod touch, Apple TV , Mac...
To trouble shoot further you can:
—Try 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.
In Safe mode third party system modifications and system accelerations are disabled, it removes malware, etc hampering smooth operation, however a reboot will put it back to normal mode.
Pat89TO wrote:
Hi, got my Macbook 16inch in October. Updated to Big Sur. Now every so often the fans go crazy and it gets super hot. The apps running on it aren't unusual. Activity monitor says Messages is using 338% of CPU, even when I'm not using the app that often.
Anyone else noticing their computer is overheating thanks to Big Sur update?
You can force quit Messages from your Activity Monitor by double clicking the process.
Sign out of Messages in iCloud.
Sign out of iCloud on your iPhone, iPad, iPod touch, Apple TV , Mac...
To trouble shoot further you can:
—Try 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.
In Safe mode third party system modifications and system accelerations are disabled, it removes malware, etc hampering smooth operation, however a reboot will put it back to normal mode.
Thanks. There just appears to be a general lag when opening apps and moving across the computer. It's a new computer and these issues really started right after Big Sur update. The fan turning on and blowing when nothing is happening is the latest issue.
I did a safeboot, and the computer ran slow during Safemode, not sure if that's commonplace.
Returning to regular mode, i haven't noticed a sizeable difference. Will have to see if the fans start going randomly again.
Macbook Pro 16 2020 Overheating after Big Sur, Messages using 350% of CPU
