I know this might sound like a silly question, but I am particularly caution when trying new things on my PC. I am on a 20 day free trial with the Avast Internet Security service.

I have noticed a feature called: "Cleanup Premium" under the 'Performance' tab.

The contents it recommends to remove to improve the performance of my PC are: Junk Files, Redundant Apps, Inefficient System Settings and Obsolete Registry Entries.

My question is more about the Redundant Apps, Inefficient System Settings and Obsolete Registry Entries. Would deleting all of these things not harm my PC in any way?

Inefficient System Settings and Obsolete Registry Entries that Avast claims I should delete.

Its safe to go ahead with this because truth be told, my PC is quite slow.

Please help.
Thanks!

I didn't find the right solution from the Internet.

References: https://www.cnet.com/forums/discussions/is-it-safe-to-use-avast-cleanup-premium/

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I read your concerns and to be honest they are really important one.
I was having same concern as yours but lesser than you, me and my friend have been using avast cleanup for a quite good time now and to be clear it is good as compared to other products in same category.

If I talk about avast cleanup premium, i agree that its price is bit higher but good things come with some cost, isn't it ?

Be relax and go with it you won't regret it in the long run :)