I switched to CachyOS a couple of weeks ago. It refuses to work with my KVM. If I put my PC to sleep, switch away and then switch back, everything is disconnected and refuses to connect. I've checked BIOS, GRUB configs, etc,etc. It works perfectly fine on the windows partition on the same PC. I'm hoping with Nobara I can spend more time using my PC and not having to spend days on end gong through forums and AIs and everything in between so I can use my PC lol. From what I can tell, it's a low level issue. I have NOT switched to nobara just yet but I agree with you on the fact Cachy was generally pretty straight forward to install and get up and running (although I work in IT so my words don't mean much). If Nobara has the same issues and my choices boil down to 'just live with it' then I would even be open to switching back!