I've always wondered what the performance impact is. Windows 10 feels so slow compared to Windows 7 and earlier that I'm constantly wondering how much of my life is being allocated to telemetry.
The impact is absolutely noticeable, just difficult to attribute.
Every time I rebuild my laptop it has these “mysterious” slowdown periods that force me to dig through the metrics to see what is the culprit.
About 80% of the time it’s telemetry.
The worst one is actually the Intel driver installer which has telemetry that is so far beyond obnoxious that it’s an embarrassment to every so-called “engineer” involved.
Not sure but it's a reasonable question. I'm willing to give MS the benefit of the doubt and guess that they have generally implemented it in as light a way as possible, but that said sometimes it probably causes dire performance problems to outright breakage. For me it's largely academic at this point, but it's another reason to be happy I moved my main workstation off Windows.
