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Samgab113 Author

Level 1

8 points

CPU Throttling with Second Monitor connected

I've seen this problem happen to many people. During the summer days, my computer is running slowly because the kernel task throttles the CPU to avoid getting hotter than it should I presume.

The issue becomes annoying the computer renders useless while this happens and I have to either disconnect the second display or disconnect the charger to fix it.

I have tried everything I found online, updated the OS to Big Sur, changed cables quality, changed the port where I was charging, and still can't seem to solve the issue.

How can I solve this issue? Help is appreciated.

MacBook Pro 15″, macOS 11.4

Posted on Jul 27, 2021 1:19 AM

Top-ranking reply

leroydouglas

Community+ 2024

Level 10

189,138 points

Posted on Jul 30, 2021 6:52 AM

Samgab113 wrote:

I've seen this problem happen to many people. During the summer days, my computer is running slowly because the kernel task throttles the CPU to avoid getting hotter than it should I presume.

The issue becomes annoying the computer renders useless while this happens and I have to either disconnect the second display or disconnect the charger to fix it.

I have tried everything I found online, updated the OS to Big Sur, changed cables quality, changed the port where I was charging, and still can't seem to solve the issue.

How can I solve this issue? Help is appreciated.

See if Apple Support can offer a useful suggestion for you issue—

Call Customer Support (800) MY–APPLE (800–692–7753)

or on line https://getsupport.apple.com/

or call AppleCare Support at 1-800-APLCARE (800-275-2273)

Outside the USA—Contact Apple for support and service by phone

See a list of Apple phone numbers around the world.

https://support.apple.com/en-us/HT201232

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CPU Throttling with Second Monitor connected

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