> I can almost guarantee this is from some endpoint management software your company installed.
I disagree. I've got windows defender as the only endpoint software on both my daily driver machines, and I see the same issues.
In 2019, I was working for a place that installed Carbon Black on my desktop and it went from fast to unusable overnight. I've since changed jobs, and I've seen a decay in the baseline of the OS over the last 6 years.