Turning off fast boot is still a good idea, but Linux distros do work with secure boot these days. So there is no need to turn it off anymore. Not saying it can't cause some issues at times, though rarely anymore. But Microsoft does provide the keys for secure boot. Where you can find an issue is with proprietary drivers like Nvidia. But Fedora has good and clear instructions on creating and installing MOK, (machine owner keys) to solve the secure boot issue them. I know the Arch wiki has them also.
In any case enjoy CachyOS and whatever comes after!