I've tested and compared it to zen and I've gained some fps (about 5-10 or so). There might be improvement in other areas as well.
Doesn't sound much, but it makes a lot of difference when one is already hitting on the lower fps side.
My hardware is on the lower end, others with better hardware might gain more.
You could get it yourself.
Either enable cachyos repos, https://gist.github.com/Faugus/e7a1e6b0816d4a3ac2276c3b6b08eaf4
or, download & install it manually, https://archive.cachyos.org/archive/
This is a viable solution. Thank you. (Am using cachyos-v3/linux-cachyos-bore)
I will still continue on with the request since I don't think mixing in system packages from other repos is best practice.
Which game? What was the zen fps count? I've seen similar performance boosts or dips between different versions of the same kernel flavor, e.g. 6.10.8-zen is 20% faster than both 6.12-zen and 6.14-zen in my setup.
Palworld. Test was done in not so computationally expensive areas. There was one time where there was a 20 fps difference but I couldn't replicate it anymore. In heavy areas about 1-2 fps only of improvement. Am running at 640x360 (This is done by manually editing the .ini config file. It cannot be done within in-game settings in the newer update.).