Comment by miles

The GRUB parameters that appear on Make-Linux-Fast-Again.com apparently disable Spectre/Meltdown mitigations:

https://gist.github.com/rizalp/ff74fd9ededb076e6102fc0b636bd...

https://securitronlinux.com/bejiitaswrath/how-to-get-a-nice-...

https://www.phoronix.com/scan.php?page=news_item&px=Spectre-...