@afre Sorry to nag about this, but I cannot believe your claim that Windows Defender can slow your computer down significantly. My main concern is with the example you provide to prove this. I am left to assume that the point where you switched off Defender during unzipping coincides with the increase in transfer speed. However, an increase in transfer speed can also be caused by unzipping many smaller files versus a few larger files (there is a little overhead to create a file on disk, which is relatively larger for multiple small files compared to a few larger ones).
If you want to claim that Windows Defender slows down unzipping, can you please provide results from a repeated experiment where you show the transfer rates for the entire zip file with Windows Defender on and again but with Windows Defender off?
Also, claiming that unzipping is a good example why your entire machine may come to a grinding halt because of Windows Defender sounds a little overreaching, but I am willing to accept that.
Personally btw, I have never bothered to disable Windows Defender on my machine and do not experience a significant slowdown. Of course that doesn’t mean that there isn’t one. Maybe I’m missing out