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PC speed gains erased by modern software
(hackaday.com)
This is a most excellent place for technology news and articles.
A tale as old as computers. Here's a very good talk about it: https://youtu.be/kZRE7HIO3vk
I've bookmarked your link, I'll watch it later. There's another talk from the same guy that's a little more recent: https://youtu.be/tD5NrevFtbU (Clean Code, Horrible Performance)