i had cachyOS installed for a couple of months but was plagued with random system freezes (only hard reset possible, no leads in journalctl). i tracked it down to an issue with the combination of wayland, KDE plasma and the kernel or at least that’s what i could gather from web searches. i had at least one of those freezes per week, often more.
i am now on kubuntu which basically has the same combination of things (wayland and KDE) that should cause the problem but it has been running fine for three weeks, no freezes. so something with the cachy kernel didn’t agree with my system.
i was now told i could use the arch kernel on cachyOS, which was news to me. i tried switching to the cachy LTS kernel but the issue persisted. i now wonder how does the compatibility of the linux kernel work? is it compatible because it is both arch linux? or would the kubuntu kernel also work on cachyOS?
I don’t know how old your hardware is, but iirc cachyos’s kernel specifically doesn’t support older hardware, so it could be that it is just too old. If I were you I would try out endeavoros if you can deal with a little more technical package management or you could use the base arch kernel on cachy. Of course your switch to kubuntu should continue to work assuming it was a kernel issue, I just don’t like canonicals vision.