Windows Search index using a lot of cpu

Recently I've noticed that windows search indexer is using about 15% cpu I don't think it's been like this before, only in the last week or so Any ideas what can cause this?

Also, I use Everything app as well. Recently I've found that it's been taking up about 800MB of memory - consistently! This wasn't like this previously!

Some points:

1. I am using Windows 10 Pro 64 bit
2. I recently started using window's file versioning. I have a hard drive connected to which Windows uses to back up the files
3. I am using Everything Version 1.4.0.713b (x64)

Although these might be clues, I don't understand why it should be going consistently!

Any help on these issues will be greatly appreciated.

Thanks,
David

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