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Question: macOS High Sierra - QuickLook UI problem

After using Quick preview to preview some PDFs, my fan gets very loud and stays loud for a long time.
After checking the Activity Monitor, I see its the QuickLook UI stuck with High CPU usage

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I've reinstalled High Sierra but it hasn't solved the problem. I have to Force Quit the task alot because of this.
Is there any fix?

iMac, macOS High Sierra (10.13.1)

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User profile for user: Black Inque

Question: macOS High Sierra - QuickLook UI problem