I purchased a license of a proper antivirus software to avoid that bug and the performance issues gone away.
When you install another AV software, Windows Defender steps down and leaves scanning to the 3rd-party security solution. I selected one of the most lightweight ones I could find. It has been a net win for me.
One shouldn't need to do this, but it has worked so far, for years now.
Which is that? For years (and come to think of it, this goes back to the 2000's or even 90's), AV / antimalware software comes across as scareware, using tricks to ensure you're afraid of not having it.
And second, who here has ever had a virus in the past ten years?
I purchased a license of ESET Internet Security, and full disclosure: back in early 2017, I worked at an ESET-licensed reseller as a Presales and Support Engineer, so I know how to fine-tune it and all the ins and outs.
By nature, it's very lightweight (330 Mb RAM footprint), but you can fine-tune it even more if you want.
> And second, who here has ever had a virus in the past ten years?
We the people at HN are tech-savvy and of course will not get infected, but recently I spotted malware out-in-the-wild via Facebook Ads[0].
Your usual grandma/grandpa using the computer to connect with loved ones and play Candy Crush Saga will get infected, if they are not by now.
Some people tell me: "bUt tHaT'S BeCaUsE ThEy aRe vIsItInG WeIrD SiTeS," well, even if you stick to the common social media sites and usual news sites, you will get infected.
I cannot emphasize this enough, but you're responsible of your own computer so I will not proselytize you into purchasing AV software.
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[0]: https://twitter.com/IvanMontillaM/status/1604308301579051009