show – kernel process is excessive when utilizing exterior monitor with macBook professional (i9)

I’ve MacBook Professional 16 inch/i9/16gGB 2019 and BenQ 32 inches 4k monitor.
I’m utilizing USB-C cable to attach this monitor.

At beginning it was working nice however after few months (throughout these days macOS was up to date time to time), it turned unattainable to make use of each screens. Kernel process getting 1000+ and MacBook is getting hung, even can’t transfer mouse cursor correctly. Then I’ve to close down my MacBook by way of the facility button.

Then, after I attempt to use instantly exterior monitor (laptop computer lid might be closed) however nonetheless some instances kernel process getting 1000+ and I can’t work, then I’ve to restart MacBook many times.

I’m not utilizing any heavy software program, simply browser and Visible Studio Code and PHP/MySQL/Apache.

It appears like I’m utilizing 15 years previous machine.

I cleared cache, rested the SMC, reinstalled the OS. I am uninterested in utilizing charging cable and monitor cable at diffrent facet however nonetheless I get this situation. contacted to assist however nonetheless not answer.

Submitted bug report back to Apple however no response.

I purchased an exterior monitor so I can work on 2 screens however I can not, I’ve to make use of MacBook display screen or exterior monitor solely. can’t use each at a time and even when I’m utilizing an exterior monitor solely then nonetheless many instances have kernel process excessive situation and MacBook bought too gradual and it is unattainable to work and need to restart the machine.

Generally, it additionally overheats when kernel process is excessive (After kernel process is excessive not earlier than).

How can I repair this situation so I can use each screens?

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