LR is using a lot of CPU despite not doing anything

[LLUIS ALBERT5C65]

These last days Lightroom steadily takes up about 50% of the CPU right after opening it, while I'm not even doing anything with it (not even scrolling pictures). At first I thought it might be one of those useless, automatic updates every software program engages without the user's permission, so I turned on the flight mode, but even after doing so, LR keeps using that much amount of CPU. What might it be happening?
I have an Asus laptop with Intel Core i7, Windows 10, 16gb ram. Never happened that to me before (I've been using LR for more than two years now).

[Tony_See]

Maybe you could post a screenshot of this usage level (use the "Insert Photo" icon in the post reply window) thanks.

Your post reads like a statement and not causing any issues?

What happens when you edit files?

[johnrellis]

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In addition to Tony's questions, click the identity plate in the upper-left corner -- is Face Detection running?

Next, click the cloud icon in the upper-right corner.  Are photos being synced?

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[LLUIS ALBERT5C65]

Hi guys! It finally stopped consuming that much cpu. I clicked on Optimize catalog and it started properly working as usual. Then I remembered that I had added a certain folder to my catalog, and probably somehow that caused the problem, even though I don't really know what might have happened. But now everything is fine. Anyway thanks for you advice!

[johnrellis]

Adding a large number of photos to your catalog can cause CPU to increase while it generates previews for those photos and while it detects faces.

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[GoldingD]

Also, your screen shot show that Address Lookup is not paused, and could be busy.

And something was syncing.