windows – Using only 50% of CPU in Acer one 14 Z422

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The above image did not take while running CPU-hungry applications.

I am using Acer one 14 Z422. I installed Windows 10 pro. Updated to 21H1 update and installed all optional updates. The base frequency of the processor is 2Ghz. But it only utilizes 50% of cpu eve if I running CPU hungry applications. Overall system performance is too low. How can I fix it?

I tried most of the google result advice.