For me at least, I’d say the prior versions of windows were pretty zippy whereas now I don’t even know what’s going on behind the scenes and why it takes so long to perform basic tasks, even with 16 gb ram.
By that I mean performance improvements that sounds like they should be faster, but don't scale as well as simply brute forcing.
The other is "security". My work Mac has 3 different VPN/Network Proxies and 2 malware checkers. I would assume that each one is caching network details, as I have to go in an disable/enable them all once or twice a day to restore network performance.
It's like the whole multiple anti-virus conflicts on Windows again like no one ever learnt.