Has anyone here used kernels like linux-tkg, and xanmod?
What has been your experience with them on a desktop system?
Looking through the xanmod and linux-tkg patch list, I don’t see any real reason to go against the linux kernel provided by Fedora. There’s really no advantage of running these kernels anymore.
If you want an optimized gaming system consider switching to the nobara release. It is basically fedora but heavily modified to support gaming and multimedia.
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Hmm, I wouldn’t even say Heavily. It’s basically 3rd party repos, and proprietary stuff shipped by default including some of the OBS stuff than only ships on Ubuntu Snap. Really no different than uBlue/Bluefin/Bazzite in my opinion.
The big deal back in the day circa 2018-2021 was Fsync and that kind of proved to be a moot point. Also the stuff that the Devs from Middle Earth Shadow of Mordor added to the kernel was done years ago.
That’s silly; if you aren’t using Fedora for security reasons, why use it at all? Nobara was doing SELinux disabled initially, but you’re still tossing security out the window going for an unofficial forked distro.
Ubuntu with padoka/oibaf/kisak PPAs and official Liquorix or XanMod is the most traditional way of running a system like that. And if you’re going for this set-up, you’re going for performance. SELinux has notable overhead, on-top of the security flags across various packages on Fedora, so unless you rebuild Fedora from source and disable SELinux, you’re still underperforming compared to a generic Ubuntu install.
And if you were absolutely serious about performance, you’d be on Arch that has even more options available 
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i can compile my own kernels if i need to, I wont change distros. I am just asking if anyone has noticed any performance benefits.
You’ll get performance benefits.
You can probably get close to the same benefits with the default kernel and tweaking some stuff though, and that’s what I’d go for on Fedora.
Some time ago I’ve met Clear Linux OS: https://www.clearlinux.org/
which should be as much performance optimized as possible for certain Intel CPU lines.
Haven’t tried, I just thought it might be an interesting addition to the discussion.
I’d love to hear someone’s experience with it, though.
I vaguely recall Clear OS with the desktop edition using immutable or something; I couldn’t tweak something I usually tweaked on other distros and got rid of it within a few minutes.
Aside from being potentially faster than mainstream distros on modern CPUs, I’m not sure why I’d use Clear OS from a security standpoint. There’s apparently no mandatory access control (nothing in docs, and this from 4 years ago), so it’s about as niche as Arch Linux to me. A MAC is just basic security nowadays that I expect distros to have implemented.