Big sur OS slows down when I connect external monitor

Hi Team,
 
I am posting this issue on behalf of my company.

 Our company employees are using MAC with Big Sur OS 11.3.1 and some employees are reported after
connecting external monitor / TV, MAC getting slow down. When we checked Activity Monitor the service kernal_task using more CPU (700). Once we disconnect the monitor kernal_task service uses a normal CPU.
 
We have tried to change the different USB-C port and reduced display resolution, SMC &NVRAM reset. Still not improved.


In my company many cases reported on the same issue. Can you please suggest some fix/workaround
 

Thanks

Prakash

Same here

Big sur OS slows down when I connect external monitor
 
 
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